@inproceedings{IFM-2009-Butler,
	author        = "Michael J. Butler",
	booktitle     = "{Proceedings of the Seventh International Conference on Integrated Formal Methods}",
	doi           = "10.1007/978-3-642-00255-7_2",
	isbn          = "978-3-642-00254-0",
	pages         = "20--38",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Decomposition Structures for Event-B}",
	volume        = 5423,
	year          = 2009,
}