@inproceedings{FoSSaCS-2007-HagueO,
	author        = "Matthew Hague and C.-H. Luke Ong",
	booktitle     = "{Proceedings of the 10th International Conference on Foundations of Software Science and Computation Structures}",
	doi           = "10.1007/978-3-540-71389-0_16",
	isbn          = "978-3-540-71388-3",
	pages         = "213--227",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Symbolic Backwards-Reachability Analysis for Higher-Order Pushdown Systems}",
	volume        = 4423,
	year          = 2007,
}