@book{7618,
	author = {Shelly, Gary B. and Thomas J. Cashman},
	title = {Business data communications/},
	publisher = {Thomson,},
	year = {2001.},
	address = {United states,},
	edition = {````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````}
}