Körner, Christian ; Kern, Roman ; Grahsl, Hans-Peter ; Strohmaier, Markus: Of Categorizers and Describers: An Evaluation of Quantitative Measures for Tagging Motivation. In: Proceedings of the 21st ACM Conference on Hypertext and Hypermedia. New York, NY, USA : ACM, 2010 (HT '10). - ISBN 978-1-4503-0041-4, S. 157--166