conf/sigmod/81 Rowland R. Johnson Modelling Summary Data. 93-97 1981 SIGMOD Conference db/conf/sigmod/sigmod81.html#Johnson81 SIGMOD81/P093.PDF http://doi.acm.org/10.1145/582318.582333 db/conf/sigmod/Johnson81.html ... ... journals/tods/Chen76 ... ... conf/vldb/ShneidermanT80 conf/er/ScheuermannSW79 ... journals/tods/SmithS77 journals/tods/StonebrakerWKH76