J. Correia, и G. Stumme. Proceedings of the 9th International Conference on Conceptual Structures (ICCS 2001), том 2120 из Lecture Notes in Computer Science, стр. 202-215. Springer, (2001)
G. Stumme. Proceedings of the 3rd International Conference on Formal Concept Analysis, том 3403 из Lecture Notes in Computer Science, стр. 315-328. Springer, (2005)