Jeffrey D. Ullman 19-40 ICDT1997/P019.pdf 1997 ICDT db/conf/icdt/icdt97.html#Ullman97 conf/icdt/97 http://dx.doi.org/10.1007/3-540-62222-5_34 conf/icdt/Abiteboul97 journals/ai/Borgida96 conf/stoc/ChandraM77 conf/icde/ChaudhuriKPS95 conf/pods/ChaudhuriV92 conf/slp/ChenKW89 conf/ngits/Garcia-MolinaQPRSUW95 ... ... journals/jacm/Klug88 conf/pods/LevyMSS95 conf/vldb/LevyRO96 conf/aaai/LevyRO96 conf/pods/LevyRU96 ... conf/vldb/LevyS93 ... conf/icde/PapakonstantinouGW95 conf/dood/PapakonstantinouGGU95 conf/pods/RajaramanSU95 conf/pods/RamakrishnanSUV89 ... conf/pods/Shmueli87 ... books/cs/Ullman88 books/cs/Ullman89 ... conf/pods/Meyden92 conf/cikm/Widom95 journals/computer/Wiederhold92 conf/vldb/YangL87 conf/dood/ZhangO93