1. Barros, B., Mizoguchi, R., et al.: A Platform for Collaboration Analysis in CSCL: An ontological approach, Proceedings of AIED01, San Antonio, Texas, May 19–23 2001
2. Kitamura, Y., Sano, T., Namba, K. and Mizoguchi, R.: A Functional Concept Ontology and Its Application to Automatic Identification of Functional Structures, Advanced Engineering Informatics (Artificial Intelligence in Engineering), to appear, 2002.
3. Kozaki, K., et al: Development of an Environment for Building Ontologies which is based on a Fundamental Consideration of “Relationship” and “Role”:PKAW2000, pp. 205–221, Sydney, Australia, December, 2000
4. Guarino, N.: Some Ontological Principles for Designing Upper Level Lexical Resources. Proc. of the First International Conference on Lexical Resources and Evaluation, Granada, Spain, 28–30, May 1998.
5. Inaba, A., Thepchai, S., Ikeda, M., Mizoguchi, R, and Toyoda, J.: An overview of “Learning Goal Ontology”, Proc. of ECAI2000, pp. 23–30, Berlin, Germany, 2000