conf/sigmod/83 Carlo Zaniolo The Database Language GEM. 207-218 1983 SIGMOD Conference db/conf/sigmod/sigmod83.html#Zaniolo83 SIGMOD83/P207.PDF http://doi.acm.org/10.1145/582192.582226 db/conf/sigmod/Zaniolo83.html ... conf/vldb/Brodie81 journals/cacm/Codd82 journals/tods/Codd79 journals/tods/Chen76 conf/vldb/LienST81 ... conf/jcdkb/KingM82 ... journals/tods/StonebrakerWKH76 ... ... journals/tods/Shipman81 ... journals/tods/SmithS77 ... conf/sigmod/TsurZ84 ... conf/pods/Zaniolo82 ... ...