@inproceedings{GG-1982-Pfaltz,
	author        = "John L. Pfaltz",
	booktitle     = "{Proceedings of the Second International Workshop on Graph-Grammars and Their Application to Computer Science}",
	doi           = "10.1007/BFb0000115",
	editor        = "Hartmut Ehrig and Manfred Nagl and Grzegorz Rozenberg",
	isbn          = "3-540-12310-5",
	pages         = "297--313",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Transformation of structures by convex homomorphisms}",
	volume        = 153,
	year          = 1982,
}