@inproceedings{KBSE-1996-Ledru,
	author        = "Yves Ledru",
	booktitle     = "{Proceedings of the 11th Annual Knowledge-Based Software Engineering Conference}",
	editor        = "Doug White and Chris Welty",
	pages         = "10",
	publisher     = "{IEEE Computer Society}",
	title         = "{Complementing semi-formal specifications with Z}",
	url           = "http://www.ase-conferences.org/ase/past/abstracts-96/ledru.txt",
	year          = 1996,
}