@book{544918,
	author = {Timoshenko,S. and Timoshenko, Stephen,},
	title = {Vibration problems in engineering.},
	publisher = {Wiley,},
	year = {c1990.},
	address = {New York :},
	edition = {3rd ed.},
	note = {"A Wiley-Interscience publication."},
	url = {http://www.loc.gov/catdir/toc/onix03/89031896.html}
}