L. Zhang, и Y. Yu. Proceedings of the 9th International Conference on Conceptual Structures (ICCS 2001), том 2120 из Lecture Notes in Computer Science, стр. 44-57. Springer, (2001)
J. Zhong, H. Zhu, J. Li, и Y. Yu. Proceedings of the 10th International Conference on Conceptual Structures (ICCS 2002), том 2393 из Lecture Notes in Computer Science, стр. 92-196. Springer, (2002)
K. Tu, J. Lu, H. Zhu, G. Liu, и Y. Yu. Proceedings of the 11th International Conference on Conceptual Structures (ICCS 2003), том 2746 из Lecture Notes in Computer Science, стр. 378-391. Springer, (2003)
S. Easterbrook, E. Yu, J. Aranda, Y. Fan, J. Horkoff, M. Leica, и R. Qadir. RE '05: Proceedings of the 13th IEEE International Conference on Requirements Engineering (RE'05), стр. 199--208. Washington, DC, USA, IEEE Computer Society, (2005)