U. Priss, and L. Old. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), volume 4604 of Lecture Notes in Artificial Intelligence, page 310-320. Berlin, Heidelberg, Springer-Verlag, (July 2007)
S. Rudolph. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), volume 4604 of Lecture Notes in Artificial Intelligence, page 321-332. Berlin, Heidelberg, Springer-Verlag, (July 2007)
S. Ghosh, B. Löwe, and E. Scorelle. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), volume 4604 of Lecture Notes in Artificial Intelligence, page 401-414. Berlin, Heidelberg, Springer-Verlag, (July 2007)