@book{6667,
	author = {Gordon, Gary D. and Morgan, Walter L.},
	title = {Principles of communications satellites /},
	publisher = {Wiley,},
	year = {c1993.},
	address = {New York :},
	note = {"A Wiley-Interscience publication."},
	url = {http://www.loc.gov/catdir/description/wiley031/92029459.html}
}