@book{501,
	author = {Gupta, Dr. S. C.},
	title = {Optoelectronic Devices and Systems },
	publisher = {Prentice-Hall of India Pvt.Ltd,},
	year = {2005.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/8120326946/chopaconline-20}
}