@inproceedings{SAS-2004-Schmidt,
	author        = "David A. Schmidt",
	booktitle     = "{Proceedings of the 11th International Static Analysis Symposium}",
	doi           = "10.1007/978-3-540-27864-1_5",
	isbn          = "3-540-22791-1",
	pages         = "22--37",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Closed and Logical Relations for Over- and Under-Approximation of Powersets}",
	volume        = 3148,
	year          = 2004,
}