%0 Book Section %A Bianchi, Claudia %B Proceedings of the Fourth International and Interdisciplinary Conference on Modeling and Using Context (Context'03), Lecture Notes in Artificial Intelligence, Vol. 2680 %D 2003 %E Blackburn, P. %E Ghidini, C. %E Turner, R. %E Giunchiglia, F. %I Springer %T How to Refer: Objective Context vs. Intentional Context