@book{3416,
	author = {Bies, David A. and Hansen, Colin H.},
	title = {Engineering Noise Control :Theory and Practice},
	publisher = {Spon Press,},
	year = {1996.},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/041920430X/chopaconline-20}
}