@book{11843,
	author = {Lama, R.D. and Vutukuri, V.S.},
	title = {Handbook on mechanical properties of rocks :},
	publisher = {[s.n.],},
	year = {1978.},
	series = {Series on rock and soil mechanics},
	address = {Alemania:},
	note = {LIFBI.}
}