P. Øhrstrøm, H. Schärfe, and T. Ploug. Proceedings of the 18th International Conference on Conceptual Structures (ICCS 2010), volume 6208 of Lecture Notes in Computer Science, page 125-138. Springer, (2010)
T. Amghar, T. Charnois, and D. Battistelli. Proceedings of the 9th International Conference on Conceptual Structures (ICCS 2001), volume 2120 of Lecture Notes in Computer Science, page 29-43. Springer, (2001)
K. Wolff, and W. Yameogo. Proceedings of the 11th International Conference on Conceptual Structures (ICCS 2003), volume 2746 of Lecture Notes in Computer Science, page 188-200. Springer, (2003)
H. Schärfe, and P. Øhrstrøm. Proceedings of the 11th International Conference on Conceptual Structures (ICCS 2003), volume 2746 of Lecture Notes in Computer Science, page 201-214. Springer, (2003)
P. Øhrstrøm, and H. Schärfe. Proceedings of the 12th International Conference on Conceptual Structures (ICCS 2004), volume 3127 of Lecture Notes in Computer Science, page 388-401. Springer, (2004)