@article {16465,
	title = {A Semantics for a class of non-deterministic and causal production system programs},
	journal = {Journal of Automated Reasoning},
	volume = {12},
	year = {1994},
	month = {1994///},
	pages = {305 - 349},
	author = {Raschid, Louiqa and Lobo,J.}
}
