@inproceedings{POPL-1999-WandS,
	author        = "Mitchell Wand and Igor Siveroni",
	booktitle     = "{Proceedings of the 26th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/292540.292567",
	editor        = "Andrew W. Appel and Alex Aiken",
	isbn          = "1-58113-095-3",
	pages         = "291--302",
	publisher     = "{ACM}",
	title         = "{Constraint Systems for Useless Variable Elimination}",
	year          = 1999,
}