K. Wolff. Proceedings of the 13th International Conference on Conceptual Structures (ICCS 2005), Volume 3596 von Lecture Notes in Computer Science, Seite 250-266. Springer, (2005)
S. Polovina, und R. Hill. Proceedings of the 13th International Conference on Conceptual Structures (ICCS 2005), Volume 3596 von Lecture Notes in Computer Science, Seite 439-452. Springer, (2005)