J. Poelmans, P. Elzinga, S. Viaene, und G. Dedene. Proceedings of the 18th International Conference on Conceptual Structures (ICCS 2010), Volume 6208 von Lecture Notes in Computer Science, Seite 139-153. Springer, (2010)
J. Poelmans, P. Elzinga, S. Viaene, und G. Dedene. Conceptual Structures: From Information to Intelligence, Volume 6208 von Lecture Notes in Computer Science, Springer, Berlin/Heidelberg, (2010)