The Sloan Digital Sky Survey Quasar Lens Search. I. Candidate Selection Algorithm - Oguri, Masamune; Inada, Naohisa; Pindor, Bartosz; Strauss, Michael A; Richards, Gordon T; Hennawi, Joseph F; Turner, Edwin L; Lupton, Robert H; Schneider, Donald P; Fukugita, Masataka; Brinkmann, Jon (The Astronomical journal, 2006)