@inproceedings{ESOP-1988-Heckmann,
	author        = "Reinhold Heckmann",
	booktitle     = "{Proceedings of the Second European Symposium on Programming}",
	doi           = "10.1007/3-540-19027-9_12",
	editor        = "Harald Ganzinger",
	isbn          = "3-540-19027-9",
	pages         = "175--190",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Functional Language for the Specification of Complex Tree Transformations}",
	volume        = 300,
	year          = 1988,
}