@inproceedings{NACLP-1989-KempRBM,
	author        = "David B. Kemp and Kotagiri Ramamohanarao and Isaac Balbin and Krishnamurthy Meenakshi",
	booktitle     = "{Proceedings of the North American Conference on Logic Programming, 2 Volumes}",
	isbn          = "0-262-62064-2",
	pages         = "981--998",
	publisher     = "{MIT Press}",
	title         = "{Propagating Constraints in Recusive Deduction Databases}",
	year          = 1989,
}