@inproceedings{CEFP-2011-Butterfield,
	author        = "Andrew Butterfield",
	booktitle     = "{Revised Selected Papers of the Fourth Central European Functional Programming School}",
	doi           = "10.1007/978-3-642-32096-5_3",
	isbn          = "978-3-642-32095-8",
	pages         = "93--141",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Reasoning about I/O in Functional Programs}",
	volume        = 7241,
	year          = 2011,
}