Gabriel M. Kuper Moshe Y. Vardi The Logical Data Model. 379-413 1993 18 ACM Trans. Database Syst. 3 db/journals/tods/tods18.html#KuperV93 TODS18/P379.PDF http://doi.acm.org/10.1145/155271.155274 db/journals/tods/KuperV93.html journals/jcss/AbiteboulB86 journals/vldb/AbiteboulB95 conf/sigmod/AbiteboulK89 journals/tods/AbiteboulG91 ... conf/popl/AhoU79 conf/pods/Bancilhon88 conf/pods/BancilhonK86 conf/pods/BeeriNRST87 conf/sigmod/BancilhonR86 journals/cacm/Codd70 journals/tods/Codd79 journals/tods/DayalB82 conf/sigmod/FurtadoK77 ... conf/vldb/GangopadhyayDB82 ... conf/vldb/Hardgrave79 ... journals/csur/HullK87 journals/tods/HammerM81 journals/jacm/HenschenN84 journals/acta/HullS94 journals/jacm/HullY84 ... journals/jacm/Jacobs82 conf/pods/JaeschkeS82 conf/sigmod/KiferL89 ... ... ... conf/pods/KuperV84 conf/sigmod/KuperV85 conf/icdt/KuperV88 journals/jcss/Kuper90 ... conf/vldb/Makinouchi77 conf/sigmod/ManolaP82 journals/tods/OzsoyogluOM87 conf/pods/OzsoyogluY85 journals/csur/PeckhamM88 conf/adbt/Reiter77a ... journals/tods/Shipman81 conf/vldb/SchekP82 journals/tods/SmithS77 ... conf/sigmod/Tsichritzis76 books/cs/Ullman82 journals/tods/Ullman85 ...