Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Arend Lijphart, Electoral Systems and Party Systems. A Study of Twenty-seven Democracies, 1945–1900, Oxford, Oxford University Press, 1994, pp. XVIII–203.
Stazioni neolitiche delle isole Pontine e loro rapporti con i bradismi alternati di queste isole e la distribuzione delle ossidiane neolitiche nell'Italia meridionale.