@book{120509,
	author = {Pulford, Graham W. and ebrary, Inc.},
	title = {High-security mechanical locks},
	publisher = {Elsevier Butterworth-Heinemann,},
	year = {c2007.},
	address = {Amsterdam ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10204370}
}