@article {1985ApJ...293..356R,
	title = {The multiple images of the quasar 0957+561.},
	journal = {\apj},
	volume = {293},
	year = {1985},
	month = {jun},
	pages = {356-369},
	keywords = {Astronomical Maps, Astronomical Models, Astrophysics, Gravitational Lenses, Quasars, Radio Galaxies, Very Large Array (Vla), Very Long Base Interferometry},
	doi = {10.1086/163242},
	author = {Roberts, D.~H. and Greenfield, P.~E. and Hewitt, J.~N. and Burke, B.~F. and Dupree, A.~K.}
}
