conf/pods/92 Serge Abiteboul Kevin J. Compton Victor Vianu Queries Are Easier Than You Thought (Probably). 23-32 1992 PODS db/conf/pods/pods92.html#AbiteboulCV92 http://doi.acm.org/10.1145/137097.137105 db/conf/pods/AbiteboulCV92.html journals/anthology/cd1-3:PODS92/P023.PDF journals/anthology/dvd1:text/1-3/PODS92/P023.PDF conf/icdt/AbiteboulG92 journals/tcs/AbiteboulS91 journals/jcss/AbiteboulV91 conf/stoc/AbiteboulV91 journals/jacm/AbiteboulVV97 journals/tcs/AbiteboulVV95 ... journals/jcss/ChandraH80 journals/jcss/ChandraH82 conf/popl/Chandra81 ... conf/icdt/Fagin90 conf/pods/Gelder89 books/fm/GareyJ79 journals/iandc/Grandjean83 ... journals/jcss/Gurevich91 ... ... journals/sigact/KanellakisA89 ... journals/iandc/Kolaitis91 conf/pods/KolaitisP88 conf/stoc/KolaitisV87 conf/lics/KolaitisV90 journals/iandc/KolaitisV92 journals/siamcomp/Levin86 conf/pods/SeshadriN91 ... books/cs/Ullman88 books/cs/Ullman89 conf/stoc/Vardi82 ... journals/ipl/Wilf84