@book{125,
	author = {Irvine, H. Max.},
	title = {Structural dynamics for the practising engineer /},
	publisher = {Allen & Unwin,},
	year = {1986.},
	address = {London ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0910/85026805-d.html}
}