Anthony C. Klug Abe: A Query Language for Constructing Aggregates-by-Example. 190-205 1981 SSDBM db/conf/ssdbm/ssdbm81.html#Klug81 SSDBM81/P190.pdf conf/ssdbm/81 db/conf/ssdbm/Klug81.html journals/tods/AstrahanBCEGGKLMMPTWW76 journals/tods/AhoSU79 conf/stoc/ChandraM77 ... journals/jacm/Klug82 journals/cacm/RobinsonL77 journals/tods/StonebrakerWKH76 journals/tods/WongY76 journals/ibmsj/Zloof77