@inproceedings{KR-2012-FaberTW,
	author        = "Wolfgang Faber and Miroslaw Truszczynski and Stefan Woltran",
	booktitle     = "{Proceedings of the 13th International Conference on Principles of Knowledge Representation and Reasoning}",
	ee            = "http://www.aaai.org/ocs/index.php/KR/KR12/paper/view/4518",
	isbn          = "978-1-57735-560-1",
	publisher     = "{AAAI Press}",
	title         = "{Strong Equivalence of Qualitative Optimization Problems}",
	year          = 2012,
}