@inproceedings{GG-1982-MaurerRW,
	author        = "Hermann A. Maurer and Grzegorz Rozenberg and Emo Welzl",
	booktitle     = "{Proceedings of the Second International Workshop on Graph-Grammars and Their Application to Computer Science}",
	doi           = "10.1007/BFb0000110",
	editor        = "Hartmut Ehrig and Manfred Nagl and Grzegorz Rozenberg",
	isbn          = "3-540-12310-5",
	pages         = "232--244",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Chain code picture languages}",
	volume        = 153,
	year          = 1982,
}