@book{141981,
	author = {He, Jimin. and Fu, Zhi-Fang. and ebrary, Inc.},
	title = {Modal analysis},
	publisher = {Butterworth-Heinemann,},
	year = {2001.},
	address = {Oxford ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10175611}
}