conf/sigmod/80 Michael Stonebraker Kenneth Keller Embedding Expert Knowledge and Hypothetical Data Bases Into a Data Base System. 58-66 1980 SIGMOD Conference db/conf/sigmod/sigmod80.html#StonebrakerK80 SIGMOD80/P058.PDF http://doi.acm.org/10.1145/582250.582261 db/conf/sigmod/StonebrakerK80.html ... journals/tods/Chen76 journals/tods/Codd79 conf/sigmod/GoldsteinS70 conf/ac/Gray78 conf/sigmod/HammerM78 ... journals/tods/HendrixSSS78 journals/cacm/RitchieT74 journals/tods/SeveranceL76 journals/cacm/SmithS77 journals/tods/SmithS77 conf/sigmod/Stonebraker75 journals/tods/StonebrakerWKH76 journals/tods/WongY76