@inproceedings{POPL-2009-Leijen,
	author        = "Daan Leijen",
	booktitle     = "{Proceedings of the 36th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/1480881.1480891",
	editor        = "Zhong Shao and Benjamin C. Pierce",
	isbn          = "978-1-60558-379-2",
	pages         = "66--77",
	publisher     = "{ACM}",
	title         = "{Flexible types: robust type inference for first-class polymorphism}",
	year          = 2009,
}