@inproceedings{SEKE-1992-ShimuraLM,
	author        = "Teruhiro Shimura and Jorge Lobo and Tadao Murata",
	booktitle     = "{Proceedings of the Fourth International Conference on Software Engineering and Knowledge Engineering}",
	doi           = "10.1109/SEKE.1992.227976",
	pages         = "292--299",
	publisher     = "{Knowledge Systems Institute}",
	title         = "{A Petri Net Semantics for Logic Programs with Negation}",
	year          = 1992,
}