@article{POPL-2019-CastagnaLPS,
	author        = "Giuseppe Castagna and Victor Lanvin and Tommaso Petrucciani and Jeremy G. Siek",
	doi           = "10.1145/3290329",
	journal       = "{Proceedings of the ACM on Programming Languages}",
	number        = "POPL",
	pages         = "32",
	publisher     = "{ACM}",
	title         = "{Gradual typing: a new perspective}",
	volume        = 3,
	year          = 2019,
}