J. Klinger. Proceedings of the 9th International Conference on Conceptual Structures (ICCS 2001), Volume 2120 von Lecture Notes in Computer Science, Seite 101-114. Springer, (2001)
C. Hoede, und L. Zhang. Proceedings of the 9th International Conference on Conceptual Structures (ICCS 2001), Volume 2120 von Lecture Notes in Computer Science, Seite 15-28. Springer, (2001)
F. Dau. Proceedings of the 9th International Conference on Conceptual Structures (ICCS 2001), Volume 2120 von Lecture Notes in Computer Science, Seite 72-86. Springer, (2001)