S. Nilakanta, R. Wemhoff, and G. Prebhu. SIGBDP '90: Proceedings of the 1990 ACM SIGBDP conference on Trends
and directions in expert systems, page 58--71. New York, NY, USA, ACM Press, (1990)
G. Mark, and S. Poltrock. GROUP '03: Proceedings of the 2003 international ACM SIGGROUP conference
on Supporting group work, page 284--293. New York, NY, USA, ACM, (2003)
R. J�schke, A. Hotho, C. Schmitz, and G. Stumme. Proc. 18. Workshop Grundlagen von Datenbanken, page 80-84. Halle-Wittenberg, Martin-Luther-Universit�t, (June 2006)
J. Jung, and J. Sprenger. Proceedings of DW 2006. Integration, Informationslogistik und Architektur., page 189-204. Lecture Notes in Informatics, Köllen, (2006)
C. Jorgensen. Proceedings 18th Workshop of the American Society for Information
Science and Technology Special Interest Group in Classification Research,
Milwaukee, Wisconsin, (2007)
W. Jones, A. Phuwanartnurak, R. Gill, and H. Bruce. CHI '05: CHI '05 extended abstracts on Human factors in computing
systems, page 1505--1508. New York, NY, USA, ACM Press, (2005)
A. Hotho, R. Jaschke, C. Schmitz, and G. Stumme. Prof. First International Conference on Semantics And Digital Media
Technology (SAMT), Athens, Greece, dec, Springer, (2006)