@inproceedings{POPL-2013-StatonL,
	author        = "Sam Staton and Paul Blain Levy",
	booktitle     = "{Proceedings of the 40th Annual Symposium on Principles of Programming Languages}",
	doi           = "10.1145/2429069.2429091",
	editor        = "Roberto Giacobazzi and Radhia Cousot",
	isbn          = "978-1-4503-1832-7",
	pages         = "179--192",
	publisher     = "{ACM}",
	title         = "{Universal properties of impure programming languages}",
	year          = 2013,
}