EP1567991B1 - Procede et dispositif permettant de verifier des documents de valeur - Google Patents

Procede et dispositif permettant de verifier des documents de valeur Download PDF

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Publication number
EP1567991B1
EP1567991B1 EP03767703A EP03767703A EP1567991B1 EP 1567991 B1 EP1567991 B1 EP 1567991B1 EP 03767703 A EP03767703 A EP 03767703A EP 03767703 A EP03767703 A EP 03767703A EP 1567991 B1 EP1567991 B1 EP 1567991B1
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EP
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Prior art keywords
measuring
vector
reference vectors
measuring vector
previous
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German (de)
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EP1567991A2 (fr
Inventor
Wolfgang Rauscher
Thomas Giering
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Giesecke and Devrient GmbH
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Giesecke and Devrient GmbH
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G07D7/0034—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements using watermarks

Definitions

  • the invention relates to a method and a device for checking documents of value having an authenticity feature in the form of at least one luminescent substance, wherein the document of value is irradiated with light and the luminescence radiation emanating from the document of value is detected in a spectrally resolved manner in order to determine whether the authenticity feature in the checked document of value actually exists is available.
  • a luminescent e.g. a fluorescent or phosphorescent authenticity feature a single substance or a mixture of several substances understood that show a luminescence.
  • US 5 678 677 A discloses a classification scheme for recognizing and classifying banknotes, based on the classification of n-dimensional measurement vectors in the scanning of spectral regions.
  • the present invention is thus based on the finding that a simple and reliable distinction between different authenticity features can best be obtained if a measurement vector is formed from the measured values which correspond to different frequencies and / or frequency ranges of the luminescence radiation, and a class assignment of Measuring vector to one of a plurality of predetermined reference vectors that correspond to different authenticity characteristics, characterized in that the reference vectors each at least one class assignment area is assigned and checked, in which class assignment area is the measurement vector.
  • the measuring vector can consist of the measured values per se and / or variables derived therefrom.
  • the determination of the class assignment regions and thus the class assignment from the measuring vector to one of the reference vectors can preferably be carried out by a comparison of the measuring vector with a plurality of reference vectors or with at least one variable, which depends on at least two reference vectors.
  • a particularly preferred example of the former variant may be that the authenticity feature whose reference vector has the smallest difference, such as the smallest distance to the measuring vector, is determined or determinable as being present in the value document to be tested.
  • This approach has especially with authenticity features a very similar spectral course proved to be much more suitable than a procedure in which it is checked whether the intensity and / or the course of a measured luminescence radiation differs only by a maximum of a predetermined value of the intensity or the course of a reference radiation.
  • the second-mentioned variant in which no comparison of the measuring vector with each individual reference vector itself, but with at least one derived from at least two reference vectors size is performed significantly reduces the computational effort and is therefore particularly advantageous when it comes to high test speeds.
  • the size which depends on at least two reference vectors, serves as a separation surface between the two reference vectors, e.g. a (n-1) dimensional hyperplane is formed between the two n-dimensional reference vectors, the separation surface separating the class assignment regions of the two reference vectors. In this case, e.g. determines the position of the measuring vector with respect to the separating surface.
  • the test system according to the invention can preferably be extended to include a further step, in which it is checked whether the magnitude of the measurement vector is greater than a predetermined reference value or not.
  • This step is particularly preferably performed prior to the step of assigning the class assignment areas and / or the step of checking in which of these areas the measurement vector is located.
  • the measuring vector is thus preferably formed from measured values of the infrared spectral range.
  • the measuring vector and the reference vectors are normalized in a similar manner.
  • this can be done, for example, by normalizing to an n-1 dimensional unit sphere, so that the magnitude of all normalized vectors is the same, i.e., the same. in particular has the value 1.
  • the measurements have a background signal, which does not originate from the luminescence radiation and superimposes the luminescence radiation.
  • This background signal interferes with the evaluation, since the ratios of the measuring vectors to the reference vectors change significantly as a function of the height of the background signals due to the normalization and can thus lead to less accurate results of the evaluation.
  • a background signal is taken into account in the evaluation of the measured values, which does not originate from the Lunünzenzstrahlung.
  • an amount may be deducted from the measured values to form the measuring vector, which amount depends on the size of the background signal.
  • the amount may vary from measured value to measured value of the measuring vector, i. it is also possible to use a background vector generated by the background signal.
  • the amount will be particularly preferably dependent on the size of a minimum and / or maximum of the measured values and / or a ratio of a plurality of measured values to one another. If the emission spectrum of the background signal is known, by measuring the background signal at a single or e.g. a few frequencies of the background vector are calculated. If the background vector is known, it can e.g. stored in the sensor stored and be deducted without measurement of the measured values.
  • FIG. 1 is a schematic view of a test apparatus according to a first embodiment
  • the FIG. 2 shows a two-dimensional representation for illustrating the method according to the invention
  • the FIG. 3 shows a two-dimensional representation to illustrate the class assignment method according to the invention
  • FIG. 4 shows a schematic view of a spectral curve L1 measured by a banknote and of a portion L2 of the spectral curve L1 that is due only to the luminescence radiation.
  • test system can be used in all devices which check luminescent authenticity features.
  • banknote processing devices which can serve, for example, for counting, sorting, depositing and / or paying out banknotes.
  • FIG. 1 illustrates in particular a device 1 which, in addition to components already known per se, which are not shown, also has, among other things, a transport device 2 by means of which banknotes 3 are occasionally transported past a checking device 4.
  • the checking device 4 can be designed to check the authenticity, the state or the nominal value of the banknotes 3.
  • the test device 4 has a light source 5, a spectral sensor 6 and an evaluation device 7, which is connected via a signal line 8 at least with the spectral sensor 6.
  • the light source 5 serves to irradiate the banknote 3 with light beams 9 at an oblique angle to the banknote surface and the spectral sensor 6 for detecting and spectral decomposition of the remitted from the banknote surface radiation 10.
  • the spectral sensor 6 detects by means of a spectrometer 6 luminescence 10 in the infrared Spectral range.
  • the signals detected by the spectral sensor 6 are transmitted via the signal line 8 to the computer-based evaluation device 7, which checks on the basis of the measured signals whether a specific authenticity feature is present in the banknote 3.
  • the device 1 is distinguished, in particular, by the type of evaluation of the measurement signals in the evaluation device 7. This can be done, for example, according to an embodiment of the method according to the invention in the following manner:
  • measuring vector X (x 1 ,..., X n ) be, for example, a measure of the spectral curve of the recorded luminescent radiation 10 of the banknote 3, where x 1 to x n are values which, on the basis of the measuring signals of n different photocells of the Spectral sensors 6 are formed.
  • the spectral values x 1 to x n can preferably correspond to the measured luminescence intensity at different frequencies or frequency ranges in an invisible to the eye, such as ultraviolet or particularly preferably infrared spectral range.
  • the measuring vector X thus represents, at least in the case n> 1, preferably n ⁇ 5 or n ⁇ 10; a measure of the shape, ie the course of the measured spectral curve.
  • the banknote In order to decide whether at all one of the two allowed authenticity features is present in or on the banknote, it can first be checked whether the magnitude of the measurement vector X, i.
  • the threshold can be 0, but is preferably chosen so that counterfeits without authenticity feature are already distinguishable here certainly.
  • this reference value R has, for example, an amount
  • counterfeits can be sorted out, in which the authenticity features are present in themselves, but in too low a concentration. This is particularly preferred because in the variant described in the infrared spectral range is measured and counterfeits usually have intensities in this spectral range, which are either negligible or at least substantially lower than the intensities of the authenticity features A, B in real banknotes 3.
  • this criterion is that the amount
  • This variant of the upstream amount check can significantly increase the speed of the banknote check.
  • there is exactly one class assignment area for each reference vector in the general case there can be several class assignment areas per reference vector.
  • these regions are half-planes G A , G B , as illustrated in FIG.
  • the class allocation areas are averages of finitely many half-levels.
  • the class assignment regions can now be defined either via the reference vectors A, B (in the general case A 1 ,..., A k ) or via a description of the hyperplanes delimiting them.
  • the one reference vector A, B is determined which has the smallest difference to the measuring vector X.
  • the distance of the measuring vector X to all possible authenticity features can be calculated for the two reference vectors A, B.
  • the distance can be considered Euclidean distance between the relevant vectors, in the example so d (X, A) and d (X, B) are calculated.
  • every function d (X, A) can be used with the following property: For any measurement vectors X and reference vectors A, B, then d (X, A) ⁇ d (X, B) if
  • the class allocation areas are defined in the second case by a separation area T, which contains the two reference vectors A, B (in the general case A 1 ,..., A k ) limited.
  • This variant has the advantage, in particular in real-time environments, that the computational effort is reduced.
  • n-1-dimensional hyperplanes T for example as points ⁇ y 1 , ..., y n ) ⁇
  • u 1 y 1 + ... + a n y n - u 0 0 ⁇ describe where (u 1, ..., u n) is a normal vector of the hyperplane T.
  • the sign of u 1 x 1 + ... + u n x n - u 0 now indicates on which side of the hyperplane T the measurement X lies.
  • an assignment of the measuring vector X to one of the reference vectors A, B takes place only if their mutual distance d (X, A) or d (X, B ) does not exceed a predetermined threshold.
  • the class allocation areas G A , G B are limited so that the class allocation areas do not touch anymore. In this way arises between the class allocation areas G A , G B "no man's land", ie areas that are not assigned to any class and thus no reference vector A 1 , ..., A k . Banknotes 3, the measuring vector lying in these areas, for example, provided with a warning after the test in the test device 4 can be controlled or transferred to a special filing.
  • the probability that a measurement vector X corresponds to one of at least two reference vectors A, B is not uniformly distributed, but is e.g. has a correlation.
  • the distance of the measuring vector X from the reference vectors A, B increases with its intensity and the intensity of the individual reference curves A, B.
  • the distance of its reference vector A or B to the measurement vector X can also be correspondingly larger.
  • both the reference vectors A, B as well as the Measurement vector X normalized.
  • ie A by amount of A
  • each n components have the projection on the n-dimensional unit sphere E.
  • the distance d (X, A) and d (X, B) of the normalized measurement vector X / (X) is normalized to all Reference vectors A /
  • the classification is in turn carried out for the authenticity feature whose reference vector A, B has the smallest distance d (X, A) d (X, B) to the measurement vector X, in the illustrated case thus the authenticity feature A.
  • d (X, A)
  • every function d (X, A) can be used with the following property: For any measurement vectors X and reference vectors A, B, d (X, A) ⁇ d (X, B) if and only if
  • applies ,
  • the angle between the lines of origin defined by them can be used.
  • d (X, A) here corresponds to the length of the lot from X to the origin straight line defined by A.
  • d ( X, A)
  • 2 This expression is particularly preferred when the distance must be calculated time-critical, since this saves the time-consuming calculation of the root in the second example.
  • the luminescence radiation 10 of a banknote 3 is measured at different times and this is taken into account in the evaluation. On the one hand, it can be determined here whether the measured radiation 10 of the checked banknote 3 actually has the time behavior to be expected for the respective type of luminescence.
  • the banknotes 3 are preferably irradiated intermittently in time by the light source 5, in order to obtain e.g. to be able to measure the decay behavior of the luminescence radiation 10 in a time-resolved manner.
  • a time-dependent representation of the measuring vectors X and / or the reference vectors A, B can also be chosen with particular preference, and the distance formation can be carried out in a time-dependent manner.
  • a further idea of the present invention is that the measurement of the luminescence radiation takes place only at predetermined subregions of the banknote surface, which are chosen to be nominal value-specific in a particularly preferred manner. This can be done, for example, by illuminating the light source 5 only one or more specific subregions of the banknote 3 during transport to a test device 3, or by taking into account information about the position of the respectively illuminated subregions of the banknote 3 during evaluation in the evaluation device 7.
  • This location-dependent measurement of the luminescence radiation 10 can be used, for example, to be able to also distinguish spatially coded authenticity marks which are not homogeneously introduced in the banknote paper.
  • the luminescence radiation 10 also does not necessarily have to be measured in reflection, but alternatively or additionally, it can also be measured and evaluated in transmission.
  • FIG. 4 To illustrate the problem is shown in Figure 4 in a schematic manner with the solid line L1 drawn by the spectral sensor 6 measured spectral course of the measured signals of an illuminated bill 3, i. the dependence of the measured signal intensity I (f) of the measuring signal frequency f shown.
  • the portion of the measuring curve L1 actually derived only from the luminescence radiation 10, corresponding to the dashed line L2, is lower in magnitude and superimposed by an interfering background signal which does not originate from the luminescence radiation 10.
  • a reference measurement in a banknote gap can be carried out.
  • measured values are recorded by means of the spectral sensor 6 when no banknote 3 is located in the detection range of the spectral sensor 6.
  • the signals thus obtained then represent a measure of the strength of the background signal and can be taken into account in the subsequent formation or evaluation of the measuring vectors, e.g. be subtracted from the measured values in the measurement of the subsequent banknote 3.
  • the size of a relative, preferably the absolute minimum and / or maximum of the measurement signals can be determined in a spectral range used for further evaluation.
  • This may be, for example, a point in the spectrum at which the luminescent substances to be tested do not usually emit.
  • this minimum is exemplarily at the frequency f Min1 and has an intensity I Min1 .
  • another nonlinear offset can also be subtracted, in which the subtracted value coincides with the reference value Frequency f varies. That is, the amount may be different from measured value to measured value of the measuring vector, ie a background vector generated by the background signal may also be used. This makes sense, even if the background signals have a non-linear course, ie an amount that is not constant over all frequencies f. If the emission spectrum of the background signal is known, the background vector can be calculated by measuring the background signal at a single or multiple frequencies. If the background vector is known, it can for example be stored in the sensor and also be subtracted from the measured values without measurement.
  • the said methods for compensating the background signals can also be used advantageously in other luminescence evaluation methods, independently of the subject matter of the main claims.
  • the procedure according to the invention thus makes possible a simple and reliable testing and differentiation of authenticity features, in particular with a very similar spectral profile, which can be contained in value documents.

Claims (15)

  1. Procédé pour l'examen de documents de valeur (3) avec une caractéristique d'authenticité sous la forme d'au moins une substance luminescente, le document de valeur (3) étant exposé à des rayons lumineux (9) et le rayonnement luminescent (10) provenant du document de valeur (3) étant soumis à résolution spectrale, afin de déterminer si la caractéristique d'authenticité est présente sur le document de valeur (3),
    caractérisé en ce que
    un vecteur de mesure (X) est formé -à partir des valeurs de mesure correspondant à différentes fréquences et/ou étendues de fréquences du rayonnement luminescent (10), et en ce qu'une affectation du vecteur de mesure (X) à un vecteur de référence parmi plusieurs vecteurs de référence prescrits (A1, ..., Ak) correspondant à diverses caractéristiques d'authenticité est exécutée par attribution d'une plage d'affectation (G1, ..., Gl) respective aux vecteurs de référence prescrits (A1, ..., Ak), et par contrôle de la plage d'affectation (G1, ..., Gl) où se trouve le vecteur de mesure (X).
  2. Procédé selon la revendication 1, caractérisé en ce que le processus de contrôle comporte une autre étape au cours de laquelle il est vérifié si la grandeur (| X|) du vecteur de mesure (X) est supérieure à une valeur de référence prescrite (R).
  3. Procédé selon la revendication 2, caractérisé en ce que l'étape de vérification si la grandeur (|X|) du vecteur de mesure (X) est supérieure à une valeur de référence prescrite (R), est exécutée avant l'étape d'affectation du vecteur de mesure (X) à un vecteur de référence parmi plusieurs vecteurs de référence prescrits (A1, ..., Ak).
  4. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que le vecteur de mesure (X) et les vecteurs de référence (A1, ..., Ak) sont normalisés.
  5. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que l'affectation du vecteur de mesure (X) à un des vecteurs de référence (Am) est effectuée par comparaison du vecteur de mesure (X) avec plusieurs vecteurs de référence (A1, ..., Ak) et/ou avec au moins une grandeur (T) dépendant de deux vecteurs de référence (A1, ..., Ak) au moins.
  6. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que l'affectation du vecteur de mesure (X) à un des vecteurs de référence (Am) est effectuée par détermination de la différence minimale, telle que la distance minimale (d(X, Am)) du vecteur de mesure (X) aux vecteurs de référence (A1, ..., Ak).
  7. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que la grandeur (T) dépendant de deux vecteurs de référence (A, B) au moins est configurée en tant que surface de séparation (T) entre les deux vecteurs de référence (A, B), telle un hyperplan (T) à (n-1) dimensions entre les deux vecteurs de référence (A, B) à n dimensions, la surface de séparation (T) séparant entre elles les plages d'affectation (GA, GB) des deux vecteurs de référence (A, B).
  8. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que l'affectation du vecteur de mesure (X) à un des vecteurs de référence (Am) est déterminée en ce que la position du vecteur de mesure (X) est définie par rapport à la surface de séparation (T).
  9. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que pour un document de valeur (3) à examiner, le rayonnement luminescent (10) est mesuré en résolution temporelle, la comparaison du vecteur de mesure (X) et des vecteurs de référence (A, B) pouvant être effectuée en, fonction du temps.
  10. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que la mesure de luminescence (10) n'est effectuée que sur une ou plusieurs zones partielles définies à la surface du document de valeur, lesquelles peuvent être définies spécifiquement à la valeur nominale.
  11. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce que le vecteur de mesure (X) comprend des valeurs de mesure de la plage spectrale infrarouge ou ultraviolette, autrement dit d'une plage spectrale non visible.
  12. Procédé selon l'une des revendications précédentes au moins, caractérisé en ce qu'un signal de fond (L2-L1) est pris en compte pour l'évaluation des signaux de mesure, lequel ne provient pas du rayonnement luminescent (10).
  13. Procédé selon la revendication 12, caractérisé en ce que, pour la formation du vecteur de mesure, un montant est déduit des valeurs de mesure, lequel dépend de la grandeur du signal de fond (L2-L1).
  14. Procédé selon la revendication 13, caractérisé en ce que le montant est fonction de la grandeur d'un minimum et/ou d'un maximum des valeurs de mesure, et/ou d'un rapport de deux valeurs de mesure.
  15. Dispositif (1) pour l'examen de documents de valeur (3) avec une caractéristique d'authenticité sous la forme d'au moins une-substance luminescente, avec une source lumineuse (5) pour l'exposition du document de valeur (3) et un capteur spectral (6) pour saisir le rayonnement luminescent (10) provenant du document de valeur (3) avec résolution spectrale, et avec une unité d'évaluation (7) reliée au capteur spectral (6) pour déterminer si la caractéristique d'authenticité est présente sur le document de valeur (3),
    caractérisé en ce que
    l'unité d'évaluation (7) est configurée de manière qu'un vecteur de mesure (X) soit formé à partir des valeurs de mesure correspondant à différentes fréquences et/ou étendues de fréquences du rayonnement luminescent (10), et qu'une affectation du vecteur de mesure (X) à un vecteur de référence parmi plusieurs vecteurs de référence prescrits (A1, ..., Ak) correspondant à diverses caractéristiques d'authenticité soit exécutée par attribution d'une plage d'affectation (G1, ..., Gl) respective aux vecteurs de référence prescrits (A1, ..., Ak), et par contrôle de la plage d'affectation où se trouve le vecteur de mesure (X).
EP03767703A 2002-11-29 2003-11-28 Procede et dispositif permettant de verifier des documents de valeur Expired - Lifetime EP1567991B1 (fr)

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Application Number Priority Date Filing Date Title
DE10256114 2002-11-29
DE10256114A DE10256114A1 (de) 2002-11-29 2002-11-29 Verfahren und Vorrichtung zur Prüfung von Wertdokumenten
PCT/EP2003/013435 WO2004051582A2 (fr) 2002-11-29 2003-11-28 Procede et dispositif permettant de verifier des documents de valeur

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EP1567991A2 EP1567991A2 (fr) 2005-08-31
EP1567991B1 true EP1567991B1 (fr) 2006-04-19

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US (1) US7873199B2 (fr)
EP (1) EP1567991B1 (fr)
AT (1) ATE323920T1 (fr)
AU (1) AU2003292157A1 (fr)
DE (2) DE10256114A1 (fr)
ES (1) ES2259149T3 (fr)
WO (1) WO2004051582A2 (fr)

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DE10346636A1 (de) 2003-10-08 2005-05-12 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur Prüfung von Wertdokumenten
US8330122B2 (en) * 2007-11-30 2012-12-11 Honeywell International Inc Authenticatable mark, systems for preparing and authenticating the mark
DE102011016509A1 (de) 2011-04-08 2012-10-11 Giesecke & Devrient Gmbh Verfahren zur Prüfung von Wertdokumenten

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Publication number Priority date Publication date Assignee Title
AT330574B (de) 1972-05-03 1976-07-12 Int Security Systems Sa Falschungsgesichertes wertpapier
JPS5532132A (en) * 1978-08-28 1980-03-06 Laurel Bank Machine Co Bill discriminator
JPS5665291A (en) 1979-10-31 1981-06-02 Tokyo Shibaura Electric Co Discriminator for printed matter
US4464786A (en) * 1981-06-17 1984-08-07 Tokyo Shibaura Denki Kabushiki Kaisha System for identifying currency note
NL8202920A (nl) * 1982-07-20 1984-02-16 Tno Inrichting voor het herkennen en onderzoeken van bladvormige voorwerpen zoals bankbiljetten of dergelijke.
CH684856A5 (de) * 1992-11-30 1995-01-13 Mars Inc Verfahren zur Klassifizierung eines Musters - insbesondere eines Musters einer Banknote oder einer Münze - und Einrichtung zur Durchführung des Verfahrens.
GB2284293B (en) * 1993-11-30 1998-06-03 Mars Inc Article classifying method and apparatus
JP3366438B2 (ja) * 1994-05-25 2003-01-14 東洋通信機株式会社 紙葉類の種類識別方法
US5757001A (en) * 1996-05-01 1998-05-26 The Regents Of The University Of Calif. Detection of counterfeit currency
DE60117930T2 (de) * 2000-06-06 2006-10-05 Agilent Technologies Inc., A Delaware Corp., Palo Alto Verfahren und System zur automatischen Extraktion von Daten aus einem Molekülarray
DE10113268B4 (de) * 2001-03-16 2021-06-24 Bundesdruckerei Gmbh Sensor für die Echtheitserkennung von Sicherheitsmerkmalen auf Wert und/oder Sicherheitsdokumenten

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WO2004051582A2 (fr) 2004-06-17
US7873199B2 (en) 2011-01-18
ATE323920T1 (de) 2006-05-15
DE50303063D1 (de) 2006-05-24
ES2259149T3 (es) 2006-09-16
DE10256114A1 (de) 2004-06-09
US20060153437A1 (en) 2006-07-13
WO2004051582A3 (fr) 2004-08-26
EP1567991A2 (fr) 2005-08-31
AU2003292157A1 (en) 2004-06-23
AU2003292157A8 (en) 2004-06-23

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