S. Andrews, и S. Polovina. Proceedings of the 19th International Conference on Conceptual Structures (ICCS 2011), том 6828 из Lecture Notes in Computer Science, стр. 63-76. Springer, (2011)
S. Andrews. Proceedings of the 19th International Conference on Conceptual Structures (ICCS 2011), том 6828 из Lecture Notes in Computer Science, стр. 50-62. Springer, (2011)