@inproceedings{ICLP-1993-Fruhwirth,
	author        = "Thom W. Frühwirth",
	booktitle     = "{Proceedings of the 10th International Conference on Logic Programming}",
	isbn          = "0-262-73105-3",
	pages         = "837--838",
	publisher     = "{MIT Press}",
	title         = "{User-Defined Constraint Handling}",
	year          = 1993,
}