@inproceedings{CSL-2002-Nipkow,
	author        = "Tobias Nipkow",
	booktitle     = "{Proceedings of the 11th EACSL Annual Conference / 16th International Workshop on Computer Science Logic}",
	doi           = "10.1007/3-540-45793-3_8",
	isbn          = "3-540-44240-5",
	pages         = "103--119",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Hoare Logics for Recursive Procedures and Unbounded Nondeterminism}",
	volume        = 2471,
	year          = 2002,
}