@book{13336,
	author = {Church, A.H.},
	title = {Mechanical vibrations /},
	publisher = {John Wiley & Sons Inc,},
	year = {1963.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0471156787/chopaconline-20}
}