conf/pods/94 Diego Calvanese Maurizio Lenzerini Making Object-Oriented Schemas More Expressive. 243-254 1994 PODS db/conf/pods/pods94.html#CalvaneseL94 http://doi.acm.org/10.1145/182591.182620 db/conf/pods/pods94-243.html journals/anthology/cd1-3:PODS94/P243.PDF journals/anthology/dvd1:text/1-3/PODS94/P243.PDF conf/vldb/AlbanoGO91 conf/sigmod/AbiteboulK89 conf/icde/AtzeniP86 ... ... ... conf/icde/CalvaneseL94 ... journals/tkde/BattistaL93 conf/kr/DoniniLNN91 journals/cacm/FikesK85 books/fm/GareyJ79 ... ... journals/is/LenzeriniN90 conf/pods/LecluseR89 conf/er/LenzeriniS83 conf/sigmod/LyngbaekV87 journals/ai/Nebel88 journals/jacm/Papadimitriou81 conf/er/Thalheim92