@inproceedings{ICFP-2000-GapeyevLP,
	author        = "Vladimir Gapeyev and Michael Y. Levin and Benjamin C. Pierce",
	booktitle     = "{Proceedings of the Fifth International Conference on Functional Programming}",
	doi           = "10.1145/351240.351261",
	editor        = "Martin Odersky and Philip Wadler",
	isbn          = "1-58113-202-6",
	pages         = "221--231",
	publisher     = "{ACM}",
	title         = "{Recursive subtyping revealed: functional pearl}",
	year          = 2000,
}