@book{56,
	author = {Healey, Martin. and Hebditch, David Leroy.},
	title = {The minicomputer in on-line systems :},
	publisher = {Winthrop,},
	year = {c1981.},
	series = {Winthrop computer systems series},
	address = {Cambridge, Mass. :},
	note = {Includes index.}
}