@inproceedings{GG-1986-Nagl,
	author        = "Manfred Nagl",
	booktitle     = "{Proceedings of the Third International Workshop on Graph-Grammars and Their Application to Computer Science}",
	doi           = "10.1007/3-540-18771-5_43",
	editor        = "Hartmut Ehrig and Manfred Nagl and Grzegorz Rozenberg and Azriel Rosenfeld",
	isbn          = "3-540-18771-5",
	pages         = "41--54",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Set theoretic approaches to graph grammars}",
	volume        = 291,
	year          = 1986,
}