@inproceedings{ICLP-1994-CairesM,
	author        = "Luís Caires and Luís Monteiro",
	booktitle     = "{Proceedings of the 11th International Conference on Logic Programming}",
	isbn          = "0-262-72022-1",
	pages         = "419--433",
	publisher     = "{MIT Press}",
	title         = "{Higher-Order Polymorphic Unification for Logic Programming}",
	year          = 1994,
}