@inproceedings{LICS-1990-MarekNR,
	author        = "V. Wiktor Marek and Anil Nerode and Jeffrey B. Remmel",
	booktitle     = "{Proceedings of the Fifth Annual Symposium on Logic in Computer Science}",
	doi           = "10.1109/LICS.1990.113736",
	isbn          = "0-8186-2073-0",
	pages         = "79--94",
	publisher     = "{IEEE Computer Society}",
	title         = "{A Theory of Nonmonotonic Rule Systems}",
	year          = 1990,
}