@article{POPL-2018-Danielsson,
	author        = "Nils Anders Danielsson",
	doi           = "10.1145/3158131",
	journal       = "{Proceedings of the ACM on Programming Languages}",
	number        = "POPL",
	pages         = "28",
	publisher     = "{ACM}",
	title         = "{Up-to techniques using sized types}",
	volume        = 2,
	year          = 2018,
}