@book{176105,
	author = {Akopyan, Vladimir A. and ebrary, Inc.},
	title = {Definition of constants for piezoceramic materials},
	publisher = {Nova Science Publishers,},
	year = {c2010.},
	series = {Materials science and technologies series},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10671139}
}