Reference:
Gerhard Brewka, Ilkka Niemelä, and Tommi Syrjänen. Logic programs with ordered disjunction. Computational Intelligence, 20(2):333–357, 2004.
Suggested BibTeX entry:
@article{BNS2004:ci,
author = {Gerhard Brewka and Ilkka Niemel{\"a} and Tommi Syrj{\"a}nen},
journal = {Computational Intelligence},
number = {2},
pages = {333--357},
title = {Logic Programs with Ordered Disjunction},
volume = {20},
year = {2004},
}
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