@inproceedings{ICGT-2004-BohlenR,
	author        = "Boris Böhlen and Ulrike Ranger",
	booktitle     = "{Proceedings of the Second International Conference on Graph Transformations}",
	doi           = "10.1007/978-3-540-30203-2_9",
	editor        = "Hartmut Ehrig and Gregor Engels and Francesco Parisi-Presicce and Grzegorz Rozenberg",
	isbn          = "3-540-23207-9",
	pages         = "96--111",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Concepts for Specifying Complex Graph Transformation Systems}",
	volume        = 3256,
	year          = 2004,
}