Wu, Harris, Zubair, Mohammad, Maly, Kurt ; Wiil, Uffe Kock, Nürnberg, Peter J., Rubart, Jessica: Harvesting social knowledge from folksonomies.. In: Hypertext : ACM, 2006. - ISBN 1-59593-417-0, S. 111-114

Langville, Amy N., Meyer, Carl D., Rezension zu: A Survey of Eigenvector Methods of Web Information Retrieval, in: The SIAM Review 1 (2005), S. 135-161.

Almeida, Rodrigo B., Almeida, Virgilio A. F.: A community-aware search engine. In: Proceedings of the 13th international conference on World Wide Web. New York, NY, USA : ACM Press, 2004. - ISBN 1-58113-844-X, S. 413--421

Almeida, R.B., Almeida, V.A.F., Rezension zu: Design and evaluation of a user-based community discovery technique (2003), S. 17--23.

Borodin, Allan, Roberts, Gareth O., Rosenthal, Jeffrey S., Tsaparas, Panayiotis: Finding authorities and hubs from link structures on the World Wide Web. In: Proceedings of the 10th international conference on World Wide Web. New York, NY, USA : ACM Press, 2001, S. 415--429

Kleinberg, Jon M., Authoritative sources in a hyperlinked environment, in: J. ACM 46 (1999), S. 604--632.

Kleinberg, Jon M., Authoritative sources in a hyperlinked environment, in: Journal of the ACM 46 5 (1999), S. 604--632.