@inproceedings{RTA-2009-DuvalEP,
	author        = "Dominique Duval and Rachid Echahed and Frédéric Prost",
	booktitle     = "{Proceedings of the 20th International Conference on Rewriting Techniques and Applications}",
	doi           = "10.1007/978-3-642-02348-4_14",
	editor        = "Ralf Treinen",
	isbn          = "978-3-642-02347-7",
	pages         = "194--208",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Heterogeneous Pushout Approach to Term-Graph Transformation}",
	volume        = 5595,
	year          = 2009,
}