@inproceedings{ILPS-1993-MacdonaldSY,
	author        = "Andrew D. Macdonald and Peter J. Stuckey and Roland H. C. Yap",
	booktitle     = "{Proceedings of the International Symposium on Logic Programming}",
	isbn          = "0-262-63152-0",
	pages         = "75--93",
	publisher     = "{MIT Press}",
	title         = "{Redundancy of Variables in CLP (R)}",
	year          = 1993,
}