Simona Colucci Tommaso Di Noia Eugenio Di Sciascio Francesco M. Donini Marina Mongiello Giacomo Piscitelli Gianvito Rossi An Agency for Semantic-Based Automatic Discovery of Web Services. 315-328 2004 conf/ifip12/2004 AIAI db/conf/ifip12/aiai2004.html#ColucciNSDMPR04