@book{27704,
	author = {International Congress on Rock Mechanics (6th : 1987) and Herget, G. and Canadian Rock Mechanics Association},
	title = {Proceedings Sixth International Congress On Rock Mechanics, Montreal, Canada, 1987 : Volume II /},
	publisher = {A. A. Balkema ,},
	year = {1987},
	address = {Rotterdam :},
	note = {Sponsored by the Canadian Rock Mechanics Association / CIM / CGS}
}