Binary vs. non-binary constraints. Bacchus, F., Chen, X., van Beek, P., & Walsh, T. Artif. Intell., 140(1/2):1-37, 2002.
Binary vs. non-binary constraints [link]Paper  bibtex   
@article{DBLP:journals/ai/BacchusCBW02,
	author = {Fahiem Bacchus and Xinguang Chen and Peter van Beek and Toby Walsh},
	title = {Binary vs. non-binary constraints},
        area = {Advanced Propositional Reasoning (CSP/SAT, #SAT/Bayes, Optimization, QBF/QCSP)},
	journal = {Artif. Intell.},
	volume = {140},
	number = {1/2},
	year = {2002},
	pages = {1-37},
	url = {http://dx.doi.org/10.1016/S0004-3702(02)00210-2},
	bibsource = {DBLP http://dblp.uni-trier.de}
}

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