C. Hentschel, I. Blümel, and H. Sack. Proceedings of the 13th International Conference on Knowledge Management and Knowledge Technologies, page 16:1--16:8. New York, NY, USA, ACM, (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)