A. Nauerz, F. Bakalov, B. König-Ries, и M. Welsch. CASCON '08: Proceedings of the 2008 conference of the center for advanced studies on collaborative research, стр. 57--71. New York, NY, USA, ACM, (2008)
C. Rohr, и D. Tjondronegoro. MIR '08: Proceeding of the 1st ACM international conference on Multimedia information retrieval, стр. 371--378. New York, NY, USA, ACM, (2008)