Mitzlaff, Folke ; Benz, Dominik ; Stumme, Gerd ; Hotho, Andreas: Visit me, click me, be my friend: an analysis of evidence networks of user relationships in BibSonomy. In: HT '10: Proceedings of the 21st ACM Conference on Hypertext and Hypermedia. New York, NY, USA : ACM, 2010. - ISBN 978-1-4503-0041-4, S. 265--270