1. Bournaud I., Ganascia J.-G.: Accounting for Domain Knowledge in the Construction of a Generalization Space. ICCS’97, Lectures Notes in AI n°1257, Springer-Verlag (1997) 446–459.
2. Bournaud I., Zucker J.-D.: Integrating Machine Learning Techniques in a Guided Discovery Tutoring Environment for Chinese Characters. International Journal of Chinese and Oriental Languages Information, Processing Society, 8(2) (1998).
3. Carpineto C., Romano G.: GALOIS: An order-theoretic approach to conceptual clustering. Tenth International Conference on Machine Learning (1993).
4. Chein M., Mugnier M.L.: Conceptual Graphs: Fundamental Notions. Revue d’Intelligence Artificielle, 6(4) (1992) 365–406.
5. Fisher D.: Approaches to conceptual clustering. Ninth International Joint Conference on Artificial Intelligence, Los Angeles, CA, Morgan Kaufmann (1985).