@book{9460,
	author = {Smart, W. M. and Green, Robin M.},
	title = {Textbook on spherical astronomy /},
	publisher = {Cambridge University Press,},
	year = {1977.},
	address = {Cambridge ;},
	edition = {6th ed. /},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/description/cam032/76050643.html}
}