conf/sigmod/86 Tomasz Imielinski Query Processing in Deductive Databases with Incomplete Information. 268-280 1986 SIGMOD Conference db/conf/sigmod/sigmod86.html#Imielinski86 SIGMOD86/P268.PDF http://doi.acm.org/10.1145/16894.16881 db/conf/sigmod/Imielinski86.html conf/popl/AhoU79 journals/tods/BancilhonS81 conf/pods/ChandraH82 journals/csur/GallaireMN84 journals/jacm/Hull84 journals/jacm/ImielinskiL84 ... journals/jcss/JohnsonK84 ... journals/tods/MaierUV84 conf/adbt/Reiter77 conf/adbt/Reiter77a books/cs/Ullman82 conf/stoc/Vardi82