@book{1919,
	author = {Balachamdran,Balakumar},
	title = {Fundamental of vibrations.},
	publisher = {CENEAGE LEARNING INDIA PVT LTD,},
	year = {2009},
	address = {India},
	url = {http://www.amazon.com/exec/obidos/ASIN/8131509222/chopaconline-20}
}