@article{ICFP-2019-SwierstraB,
	author        = "Wouter Swierstra and Tim Baanen",
	doi           = "10.1145/3341707",
	journal       = "{Proceedings of the ACM on Programming Languages}",
	number        = "ICFP",
	pages         = "26",
	title         = "{A predicate transformer semantics for effects (functional pearl)}",
	volume        = 3,
	year          = 2019,
}