@inproceedings{LOPSTR-2008-Seki,
	author        = "Hirohisa Seki",
	booktitle     = "{Revised Selected Papers of the 18th International Symposium on Logic-Based Program Synthesis and Transformation}",
	doi           = "10.1007/978-3-642-00515-2_12",
	isbn          = "978-3-642-00514-5",
	pages         = "168--184",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{On Negative Unfolding in the Answer Set Semantics}",
	volume        = 5438,
	year          = 2008,
}