Modeling and Using Context Second International and Interdisciplinary Conference, CONTEXT'99, Trento, Italy, September 9-11, 1999, Proceedings - Bouquet, Paolo; Bouquet, Paolo; Serafini, Luciano; Serafini, Luciano; Brézillon, Patrick; Brézillon, Patrick; Benerecetti, Massimo; Benerecetti, Massimo; Castellani, Francesca; Castellani, Francesca (Springer Berlin Heidelberg : Imprint: Springer, 1999)