N. Steinmetz, and H. Sack. Proc. of of 7th IEEE International Conference on Semantic Computing (ICSC 2013), September 16-28, 2013, Irvine, California, USA (to appear), (2013)
C. Hentschel, I. Blümel, and H. Sack. Proc. of 13th International Conference on Knowledge Management and Knowledge Technologies, I-KNOW 2013, Graz, Sep. 4-6, 2013, (2013)
G. Töpper, M. Knuth, and H. Sack:. in Proc. of 8th International Conference on Semantic Systems 2012, ACM Int. Conf. Proc. Series, ACM Inc, (i-Semantics 2012), (2012)
H. Sack. Proceedings of the 24th International Conference on World Wide Web Companion, page 719--720. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2015)
J. Hercher, and H. Sack. 9th European Workshop on Networked Organization Systems and Services 2010 (NKOS 2010) at 14th European Digital Library Conference (ECDL 2010), (2010)
H. Sack. Workshop Social Software in der Wertschöpfungskette, MFG Baden-Württemberg GmbH Kompetenzzentrum des Landes für Informationstechnologie und Medien, (2006)