Binary quasars in the Sloan Digital Sky Survey: Evidence for excess clustering on small scales

JF Hennawi, MA Strauss, M Oguri, N Inada, GT Richards, B Pindor, DP Schneider, RH Becker, MD Gregg, PB Hall, DE Johnston, XH Fan, S Burles, DJ Schlegel, JE Gunn, RH Lupton, NA Bahcall, RJ Brunner, J Brinkmann