S. Sosnovsky, P. Brusilovsky, M. Yudelson, A. Mitrovic, M. Mathews, and A. Kumar. Advances in Ubiquitous User Modelling, volume 5830 of Lecture Notes in Computer Science, chapter Semantic Integration of Adaptive Educational Systems, Springer Berlin Heidelberg, Berlin, Heidelberg, (2009)
O. Kutz, and T. Mossakowski. Modular Ontologies Proceedings of the Fifth International Workshop (WoMO 2011), volume 230 of Frontiers in Artificial Intelligence and Applications, page 94-109. IOS Press, (2011)
S. Polovina, J. Cooke, and J. Loke. Proceedings of the 17th International Conference on Conceptual Structures (ICCS 2009), volume 5662 of Lecture Notes in Computer Science, page 247-256. Springer, (2009)
D. Corbett. Proceedings of the 12th International Conference on Conceptual Structures (ICCS 2004), volume 3127 of Lecture Notes in Computer Science, page 375-387. Springer, (2004)
Z. Zhang, P. Shi, H. Che, Y. Sun, and J. Gu. IBIS - International Journal of Interoperability in Business Information
Systems, 1 (1):
33-60(March 2006)