@book{623,
	author = {Kershaw, John D.},
	title = {Digital Electronics : logic and systems},
	publisher = {Kent Pub Co,},
	year = {1987.},
	address = {[S.l.] :},
	edition = {3 Sub ed.},
	url = {http://10.10.170.122:8080/browse/book/27649}
}