J. Klinger. Proceedings of the 10th International Conference on Conceptual Structures (ICCS 2002), том 2393 из Lecture Notes in Computer Science, стр. 369-381. Springer, (2002)
F. Dau. Proceedings of the 13th International Conference on Conceptual Structures (ICCS 2005), том 3596 из Lecture Notes in Computer Science, стр. 152-165. Springer, (2005)