@inproceedings{ICFP-2016-PirogW,
	author        = "Maciej Piróg and Nicolas Wu",
	booktitle     = "{Proceedings of the 21st International Conference on Functional Programming}",
	doi           = "10.1145/2951913.2951947",
	isbn          = "978-1-4503-4219-3",
	pages         = "490--501",
	publisher     = "{ACM}",
	title         = "{String diagrams for free monads (functional pearl)}",
	year          = 2016,
}