H. Sack. Proceedings of the 24th International Conference on World Wide Web Companion, Seite 719--720. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2015)
C. Hentschel, und H. Sack. 21st Int. Conf. on MultiMedia Modelling (MMM 2015), Volume 8935 von Lecture Notes in Computer Science, Seite 95--104. Springer, (2015)
T. Low, C. Hentschel, S. Stober, H. Sack, und A. Nürnberger. Proceedings of the 8th Nordic Conference on Human-Computer Interaction: Fun, Fast, Foundational, Seite 1043--1046. New York, NY, USA, ACM, (2014)
C. Hentschel, I. Blümel, und H. Sack. Proc. of 13th International Conference on Knowledge Management and Knowledge Technologies, I-KNOW 2013, Graz, Sep. 4-6, 2013, (2013)