@inproceedings{POPL-1999-WansbroughJ,
	author        = "Keith Wansbrough and Simon L. Peyton Jones",
	booktitle     = "{Proceedings of the 26th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/292540.292545",
	editor        = "Andrew W. Appel and Alex Aiken",
	isbn          = "1-58113-095-3",
	pages         = "15--28",
	publisher     = "{ACM}",
	title         = "{Once Upon a Polymorphic Type}",
	year          = 1999,
}