H. Pfeiffer, und J. Pfeiffer. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), Volume 4604 von Lecture Notes in Artificial Intelligence, Seite 484-487. Berlin, Heidelberg, Springer-Verlag, (Juli 2007)
M. Keeler, und H. Pfeiffer. Proceedings of the 14th International Conference on Conceptual Structures (ICCS 2006), Volume 4068 von Lecture Notes in Computer Science, Seite 314-330. Springer, (2006)
N. Guarino. Proceedings of the 14th International Conference on Conceptual Structures (ICCS 2006), Volume 4068 von Lecture Notes in Computer Science, Seite 1. Springer, (2006)
N. Fuchs. Proceedings of the 13th International Conference on Conceptual Structures (ICCS 2005), Volume 3596 von Lecture Notes in Computer Science, Seite 51-51. Springer, (2005)