Classical Negation in Logic Programs and Disjunctive Databases
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\begin{bibtex} @article{DBLP:journals/ngc/GelfondL91,
author = {Michael Gelfond and
Vladimir Lifschitz},
title = {Classical Negation in Logic Programs and Disjunctive Databases},
journal = {New Generation Comput.},
volume = {9},
number = {3/4},
year = {1991},
pages = {365-386},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
\end{bibtex}
