@inproceedings{PLILP-1994-GergatsoulisK,
	author        = "Manolis Gergatsoulis and Maria Katzouraki",
	booktitle     = "{Proceedings of the Sixth International Symposium on Programming Language Implementation and Logic Programming}",
	doi           = "10.1007/3-540-58402-1_24",
	isbn          = "3-540-58402-1",
	pages         = "340--354",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Unfold/Fold Transformations For Definite Clause Programs}",
	volume        = 844,
	year          = 1994,
}