@article{COCV-J-2005-Langmaack,
	author        = "Hans Langmaack",
	doi           = "10.1016/j.entcs.2005.05.007",
	journal       = "{Electronic Notes in Theoretical Computer Science}",
	number        = 2,
	pages         = "5--32",
	title         = "{What Level of Mathematical Reasoning can Computer Science Demand of a Software Implementer?}",
	volume        = 141,
	year          = 2005,
}