S. Braun, A. Schmidt, A. Walter, and V. Zacharias. Good Tags and Bad Tags - Social Tagging in der Wissensorganisation, volume 47 of Medien in der Wissenschaft, Waxmann, (2008)
S. Braun, A. Schmidt, and U. Graf. Workshop Nutzerinteraktion im Social Semantic Web, Mensch & Computer - 8. Fachuebergreifende Konferenz - M&C 2008 (Sept. 8-9, 2008, Lübeck, Germany), (2008)
S. Braun, A. Schmidt, A. Walter, and V. Zacharias. International Workshop on Emergent Semantics and Ontology Evolution (ESOE), ISWC 2007, Busan/Korea, (2007)
R. Maier, and A. Schmidt. 4th Conference Professional Knowledge Management - Experiences and Visions (WM '07), Potsdam, 1, page 325-334. Berlin, GITO, (2007)