C. Basu, H. Hirsh, and W. Cohen. AAAI '98/IAAI '98: Proceedings of the fifteenth national/tenth conference on Artificial intelligence/Innovative applications of artificial intelligence, page 714--720. Menlo Park, CA, USA, American Association for Artificial Intelligence, (1998)
S. McNee, J. Riedl, and J. Konstan. CHI '06: CHI '06 extended abstracts on Human factors in computing systems, page 1097--1101. New York, NY, USA, ACM, (2006)
S. Middleton, D. Roure, and N. Shadbolt. K-CAP '01: Proceedings of the 1st international conference on Knowledge capture, page 100--107. New York, NY, USA, ACM Press, (2001)