Körner, Christian and Benz, Dominik and Strohmaier, Markus and Hotho, Andreas and Stumme, Gerd. Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity. Proceedings of the 19th International World Wide Web Conference (WWW 2010). ACM, Raleigh, NC, USA, Year 2010.

Benetka, Gerhard and Przyborski, Aglaja. Der Bologna-Prozess als Chance für eine praxeologische Wende in der Psychologieausbildung. Year 2006.

Schein, Andrew I. and Popescul, Alexandrin and Ungar, Lyle H. and Pennock, David M.. Methods and Metrics for Cold-start Recommendations. Proceedings of the 25th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval. SIGIR '02, 253--260, ACM, New York, NY, USA, Year 2002.