@article{GT-VMT-2001-BusattoH,
	author        = "Giorgio Busatto and Berthold Hoffmann",
	doi           = "10.1016/S1571-0661(04)00184-7",
	journal       = "{Electronic Notes in Theoretical Computer Science}",
	number        = 3,
	pages         = "310--317",
	title         = "{Comparing Notions of Hierarchical Graph Transformation}",
	volume        = 50,
	year          = 2001,
}