@inproceedings{ECOOP-2003-BorbaSC,
	author        = "Paulo Borba and Augusto Sampaio and Márcio Cornélio",
	booktitle     = "{Proceedings of the 17th European Conference on Object-Oriented Programming}",
	doi           = "10.1007/978-3-540-45070-2_20",
	editor        = "Luca Cardelli",
	isbn          = "3-540-40531-3",
	pages         = "457--482",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Refinement Algebra for Object-Oriented Programming}",
	volume        = 2743,
	year          = 2003,
}