@book{175683,
	author = {Graf, Rudolf F. and Sheets, William.},
	title = {The encyclopedia of electronic circuits /},
	publisher = {Tab Books,},
	year = {c1985-<c1999    >},
	address = {Blue Ridge Summit, PA :},
	edition = { Volume 7},
	url = {http://www.loc.gov/catdir/bios/mh042/84026772.html}
}