Benz, D.; Grobelnik, M.; Hotho, A.; Jäschke, R.; Mladenic, D.; Servedio, V. D. P.; Sizov, S. & Szomszor, M. (2008), Analyzing Tag Semantics Across Collaborative Tagging Systems, in Harith Alani; Steffen Staab & Gerd Stumme, ed., 'Proceedings of the Dagstuhl Seminar on Social Web Communities' .