@book{2013,
	author = {Ghatak, A. K. and Thyagarajan, K.},
	title = {Optical electronics },
	publisher = {Cambridge University Press,},
	year = {1989.},
	address = {Cambridge [England] ;},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/description/cam023/88010291.html}
}