@book{66981,
	author = {Berge, Jean-Michel and Levia, Oz.},
	title = {Object-oriented modeling /},
	publisher = {Kluwer Academic Publishers,},
	year = {c1996.},
	address = {Boston :},
	url = {http://www.loc.gov/catdir/enhancements/fy0820/96041149-t.html}
}