@inproceedings{POPL-2006-Vouillon,
	author        = "Jérôme Vouillon",
	booktitle     = "{Proceedings of the 33rd Symposium on Principles of Programming Languages}",
	doi           = "10.1145/1111037.1111047",
	editor        = "J. Gregory Morrisett and Simon L. Peyton Jones",
	isbn          = "1-59593-027-2",
	pages         = "103--114",
	publisher     = "{ACM}",
	title         = "{Polymorphic regular tree types and patterns}",
	year          = 2006,
}