AI*IA 97: Advances in Artificial Intelligence 5th Congress of the Italian Association for Artificial Intelligence, Rome, Italy, September 17-19, 1997, Proceedings Lenzerini Maurizio Heftet / 1997 / Engelsk
Database Theory - ICDT 2003 9th International Conference, Siena, Italy, January 8-10, 2003, Proceedings Calvanese Diego Heftet / 2002 / Engelsk
