Double-peaked low-ionization emission lines in active galactic nuclei

Iskra V. Strateva, Michael A. Strauss, Lei Hao, David J. Schlegel, Pat B. Hall, James E. Gunn, Li Xin Li, Željko Ivezić, Gordon T. Richards, Nadia L. Zakamska, Wolfgang Voges, Scott F. Anderson, Robert H. Lupton, Donald P. Schneider, Jon Brinkmann, Robert C. Nichol