@book{30426,
	author = {Feng, Xia-Ting. and Hudson, J. A.},
	title = {Rock engineering design /},
	publisher = {CRC Press/Balkema,},
	year = {c2011.},
	address = {Leiden, The Netherlands :},
	url = {http://pda.library.cornell.edu/coutts/pod.cgi?CouttsID=cou14559970}
}