@book{247216,
	author = {Wyllie, Duncan C. and Mah, Christopher W.},
	title = {Rock slope engineering},
	publisher = {Spon Press},
	year = {2004.},
	address = {London},
	edition = {4th ed.},
	note = {"Based on Rock Slope Engineering (third edition, 1981) by Dr. Evert Hoek and Dr. John Bray."}
}