@inproceedings{POPL-2005-SumiiP,
	author        = "Eijiro Sumii and Benjamin C. Pierce",
	booktitle     = "{Proceedings of the 32nd Symposium on Principles of Programming Languages}",
	doi           = "10.1145/1040305.1040311",
	editor        = "Jens Palsberg and Martín Abadi",
	isbn          = "1-58113-830-X",
	pages         = "63--74",
	publisher     = "{ACM}",
	title         = "{A bisimulation for type abstraction and recursion}",
	year          = 2005,
}