Discovery of a pair of z = 4.25 quasars from the Sloan Digital Sky Survey

Donald P. Schneider, Xiaohui Fan, Michael A. Strauss, James E. Gunn, Gordon T. Richards, G. R. Knapp, Robert H. Lupton, David H. Saxe, John E. Anderson, Neta A. Bahcall, J. Brinkmann, Robert Brunner, István Csabai, Masataka Fukugita, G. S. Hennessy, Robert B. Hindsley, Željko Ivezić, R. C. Nichol, Jeffrey R. Pier, Donald G. York