C. Pradel, O. Haemmerlé, und N. Hernandez. Proceedings of the 19th International Conference on Conceptual Structures (ICCS 2011), Volume 6828 von Lecture Notes in Computer Science, Seite 229-242. Springer, (2011)
F. Amirjavid, A. Bouzouane, und B. Bouchard. Proceedings of the 19th International Conference on Conceptual Structures (ICCS 2011), Volume 6828 von Lecture Notes in Computer Science, Seite 353-356. Springer, (2011)