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)
V. Zacharias, S. Braun, and A. Schmidt. Handbook of Research on Web 2.0, 3.0 and X.0: Technologies, Business, and Social Applications, IGI Global, (2009)
A. Schmidt. Verfügbarkeit von Informationen - 30. Online-Tagung der DGI / 60. Jahrestagung der DGI. Frankfurt am Main, 15. - 17. Oktober 2008, Proceedings, Frankfurt, (2008)
S. Braun, A. Schmidt, A. Walter, and V. Zacharias. International Workshop on Emergent Semantics and Ontology Evolution (ESOE), ISWC 2007, Busan/Korea, (2007)
S. Braun, A. Schmidt, A. Walter, G. Nagypal, and V. Zacharias. Proceedings of the Workshop on Social and Collaborative Construction of Structured Knowledge at the 16th International World Wide Web Conference (WWW 07), Banff, Canada, (2007)
H. Happel, and A. Schmidt. 4th Conference Professional Knowledge Management - Experiences and Visions (WM '07), Potsdam, Workshop on Learning Software Organizations (LSO 07), 2, page 155-164. Berlin, GITO, (2007)