@book{529,
	author = {Ahmed, H. and Spreadbury, P. J.},
	title = {Analogue and Digital Electronics for Engineers: An Introduction :},
	publisher = {Cambridge University Press,},
	year = {1984.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0521264634/chopaconline-20}
}