1. D. Bridge. Product recommendation systems: A new direction. In R. Weber and C. Wangenheim, editors, Workshop Programme at fourth International Conference on Case-Based Reasoning, pages 79–86, 2001
2. D. Bridge. Towards conversational recommender systems: a dialogue grammar approach. In D. W. Aha, editor, Proceedings of the EWCBR-02 Workshop on Mixed Initiative CBR, pages 9–22, 2002
3. P. Godfrey. Minimization in cooperative response to failing database queries. International Journal of Cooperative Information Systems, 6(2):95–149, 1997
4. D. Jannach. Advisor suite – a knowledge-based sales advisory system. In R. Lopez de Mantaras and L. Saitta, editors, Proceedings of the European Conference on Artificial Intelligence, pages 720–724, Valencia, Spain, 2004. IOS Press
5. D. Jannach. Techniques for fast query relaxation in content-based recommender systems. In C. Freksa, M. Kohlhase, and K. Schill, editors, KI 2006 – 29th German Conference on AI, pages 49–63, Bremen, Germany, 2006. Springer LNAI 4314