@inproceedings{LOPSTR-2003-WeberC,
	author        = "Tjark Weber and James L. Caldwell",
	booktitle     = "{Revised Selected Papers of the 13th International Symposium on Logic Based Program Synthesis and Transformation}",
	doi           = "10.1007/978-3-540-25938-1_11",
	isbn          = "3-540-22174-3",
	pages         = "110--127",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Constructively Characterizing Fold and Unfold}",
	volume        = 3018,
	year          = 2003,
}