@inproceedings{TOOLS-USA-1998-Mitchell,
	author        = "Richard Mitchell",
	booktitle     = "{Proceedings of the 26th International Conference on Technology of Object-Oriented Languages and Systems}",
	doi           = "10.1109/TOOLS.1998.711045",
	isbn          = "0-8186-8482-8",
	pages         = "448--None",
	publisher     = "{IEEE Computer Society}",
	title         = "{Analysis by Contract: An Introduction to UML’s Object Constraint Language (OCL)}",
	year          = 1998,
}