1. DAVIS, A., GARDNER, B.B. and GARDNER, M.R. (1948): Deep South. A Social Anthropological Study of Caste and Class. University of Chicago Press, Chicago.
2. DIJKSTRA, E.W. (1959): A Note on Two Problems in Connexion With Graphs. Numerische Mathematik, 1, 269–271.
3. FRANKE, M. and THEDE, A. (2005): Clustering of Large Document Sets with Restricted Random Walks on Usage Histories. In: C. Weihs and W. Gaul (Eds.): Classification — the Ubiquitous Challenge. Springer, Heidelberg, 402–409.
4. FRANKE, M. and GEYER-SCHULZ, A. (2006): Using Restricted Random Walks for Library Recommendations and Knowledge Space Exploration. International Journal of Pattern Recognition and Artificial Intelligence, Special Issue on Personalization Techniques for Recommender Systems and Intelligent User Interfaces (to appear).
5. KARR, A.F. (1993): Probability. Springer, Heidelberg.