C. Ghidini. Modelling and Using Context -- Proceedings of the 2nd International and Interdisciplinary Conference, Context'99, volume 1688 of Lecture Notes in Artificial Intelligence, page 145--158. Springer Verlag - Heidelberg, (1999)
M. Benerecetti, P. Bouquet, and C. Ghidini. Proceedings AIMSA'98, 8th International Conference on Artificial Intelligence, Methodology, Systems, and Applications, volume 1480 of LNAI, page 62--75. Sozopol, Bulgaria, Springer Verlag, (September 1998)Winner of AIMSA'98 Best Paper Award..