@inproceedings{POPL-2001-WangA,
	author        = "Daniel C. Wang and Andrew W. Appel",
	booktitle     = "{Conference Record of the 28th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/360204.360218",
	editor        = "Chris Hankin and Dave Schmidt",
	isbn          = "1-58113-336-7",
	pages         = "166--178",
	publisher     = "{ACM}",
	title         = "{Type-preserving garbage collectors}",
	year          = 2001,
}