@inproceedings{OOPSLA-2008-NystromSPG,
	author        = "Nathaniel Nystrom and Vijay A. Saraswat and Jens Palsberg and Christian Grothoff",
	booktitle     = "{Proceedings of the 23rd Conference on Object-Oriented Programming, Systems, Languages and Applications}",
	doi           = "10.1145/1449764.1449800",
	editor        = "Gail E. Harris",
	isbn          = "978-1-60558-215-3",
	pages         = "457--474",
	publisher     = "{ACM}",
	title         = "{Constrained types for object-oriented languages}",
	year          = 2008,
}