V. Zacharias, and S. Braun. Workshop on Social and Collaborative Construction of Structured Knowledge (CKC), 16th International World Wide Web Conference (WWW 2007), (8-12 May 2007)
S. Braun, A. Schmidt, and V. Zacharias. Mensch & Computer - 7. Fachübergreifende Konferenz (M&C 2007), Munich, Germany, Oldenbourg Verlag, (2-5 September 2007)
S. Braun, A. Schmidt, and V. Zacharias. 4th Conference on Professional Knowledge Management - Experiences and Visions, Workshop on Productive Knowledge Work (ProKW 07), 2, page 217-226. Berlin, GITO, (28-30 March 2007)