@book{33309,
	author = {Butenuth, Christine. and ebrary, Inc.},
	title = {Strength and weathering of rock as boundary layer problems},
	publisher = {Imperial College Press,},
	year = {c2001.},
	address = {London :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10255955}
}