Francesco Amalfitano Antonio d'Acierno Ivana Marra Lucio Sansone An Object-Oriented DataBase for Movies-on-Demand: Two Approaches. 577-578 1999 conf/acpc/1999 ACPC http://link.springer.de/link/service/series/0558/bibs/1557/15570577.htm db/conf/acpc/acpc1999.html#AmalfitanodMS99