@inproceedings{NACLP-1989-MaherS,
	author        = "Michael J. Maher and Peter J. Stuckey",
	booktitle     = "{Proceedings of the North American Conference on Logic Programming, 2 Volumes}",
	isbn          = "0-262-62064-2",
	pages         = "20--36",
	publisher     = "{MIT Press}",
	title         = "{Expanding Query Power in Constraint Logic Programming Languages}",
	year          = 1989,
}