Catriel Beeri Yoram Kornatzky Algebraic Optimization of Object-Oriented Query Languages. 72-88 ICDT1990/P072.pdf 1990 ICDT db/conf/icdt/icdt90.html#BeeriK90 conf/icdt/90 http://dx.doi.org/10.1007/3-540-53507-1_71 conf/dood/Abiteboul89 journals/tods/AbiteboulH87 ... journals/cacm/Backus78 conf/vldb/BancilhonBKV87 conf/icde/BanerjeeKK88 conf/oodbs/Batory86 conf/sigmod/BunemanF79 journals/jacm/BurstallD77 conf/oodbs/CareyDFGMRS86 conf/sigmod/CareyDV88 conf/dood/CluetDLR89 conf/vldb/Dayal87 conf/dbpl/Dayal89 conf/sigmod/Freytag87 books/sp/Freytag87 journals/tods/FreytagG89 ... ... conf/sigmod/GraefeD87 conf/vldb/Jhingran88 journals/tods/Kim82 journals/cacm/LiskovSAS77 conf/oopsla/MaierSOP86 conf/oodbs/OBrienBS86 conf/oodbs/Osborn88 journals/tods/Schmidt77 journals/debu/ShawZ89 journals/tods/StonebrakerAH87 books/cs/Ullman88 journals/tods/Valduriez87