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.)
White, Harrison C./Boorman, Scott A./Breiger, Ronald L.(1976): Social Structure from Multiple Networks: I. Blockmodels of Roles and Positions. American Journal of Sociology 81 (4), S. 730–780.
Yntiso Gebre, Itaru Ohta und Mototji Matsuda (Hg.): African Virtues in the Pursuit of Conviviality. Exploring Local Solutions in Light of Global Prescriptions