@inproceedings{TAGT-1998-Drewes,
	author        = "Frank Drewes",
	booktitle     = "{Selected Papers of the Sixth International Workshop on Theory and Application of Graph Transformations}",
	editor        = "Hartmut Ehrig and Gregor Engels and Hans-Jörg Kreowski and Grzegorz Rozenberg",
	isbn          = "3-540-67203-6",
	pages         = "1--14",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Some Remarks on the Generative Power of Collage Grammars and Chain-Code Grammars}",
	volume        = 1764,
	year          = 1998,
}