@article{GCM-J-2012-Flick,
	author        = "Nils Erik Flick",
	ee            = "http://journal.ub.tu-berlin.de/eceasst/article/view/829",
	journal       = "{Electronic Communications of the EASST}",
	title         = "{Derivation Languages of Graph Grammars}",
	volume        = 61,
	year          = 2013,
}