@inproceedings{ESOP-2006-DrossopoulouCN,
	author        = "Sophia Drossopoulou and David G. Clarke and James Noble",
	booktitle     = "{Proceedings of the 15th European Symposium on Programming}",
	doi           = "10.1007/11693024_1",
	editor        = "Peter Sestoft",
	isbn          = "3-540-33095-X",
	pages         = "1--6",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Types for Hierarchic Shapes}",
	volume        = 3924,
	year          = 2006,
}