@inproceedings{ICFP-2004-GauthierP,
	author        = "Nadji Gauthier and François Pottier",
	booktitle     = "{Proceedings of the Ninth International Conference on Functional Programming}",
	doi           = "10.1145/1016850.1016872",
	editor        = "Chris Okasaki and Kathleen Fisher",
	isbn          = "1-58113-905-5",
	pages         = "150--161",
	publisher     = "{ACM}",
	title         = "{Numbering matters: first-order canonical forms for second-order recursive types}",
	year          = 2004,
}