On the Representation and Querying of Sets of Possible Worlds.

conf/sigmod/87 Serge Abiteboul Paris C. Kanellakis Gösta Grahne On the Representation and Querying of Sets of Possible Worlds. 34-48 1987 SIGMOD Conference db/conf/sigmod/sigmod87.html#AbiteboulKG87 SIGMOD87/P034.PDF http://doi.acm.org/10.1145/38713.38724 db/conf/sigmod/AbiteboulKG87.html conf/vldb/AbiteboulG85 journals/jlp/ChandraH85 journals/jcss/ChandraH82 journals/tods/Codd79 journals/iandc/Cosmadakis83 books/fm/GareyJ79 conf/vldb/Grahne84 journals/ipl/HoneymanLY80 conf/adbt/Imielinski82 journals/jacm/ImielinskiL84 journals/jacm/Lipski81 journals/jacm/MaierSY81 ... journals/tcs/Stockmeyer76 books/cs/Ullman82 conf/pods/Vardi85 conf/stoc/Vardi82 conf/pods/Zaniolo82