@inproceedings{PPDP-2003-Escobar,
	author        = "Santiago Escobar",
	booktitle     = "{Proceedings of the Fifth International Conference on Principles and Practice of Declarative Programming}",
	doi           = "10.1145/888251.888263",
	isbn          = "1-58113-705-2",
	pages         = "113--123",
	publisher     = "{ACM}",
	title         = "{Refining weakly outermost-needed rewriting and narrowing}",
	year          = 2003,
}