Candidate type II quasars from the sloan digital sky survey. I. Selection and optical properties of a sample at 0.3 < Z < 0.83

Nadia L. Zakamska, Michael A. Strauss, Julian H. Krolik, Matthew J. Collinge, Patrick B. Hall, Lei Hao, Timothy M. Heckman, Željko Ivezić, Gordon T. Richards, David J. Schlegel, Donald P. Schneider, Iskra Strateva, Daniel E. Vanden Berk, Scott F. Anderson, Jon Brinkmann