Don Q. Lamb, Robert C. Nicol, Masataka Fukugita, István Csabai, István Csabai, Osamu Nakamura, Douglas P. Finkbeiner, Jeffrey A. Munn, David W. Hogg, Don G. York, Željko Ivezić, Donald P. Schneider, David J. Schlegel, James E. Gunn, Daniel J. Eisenstein, Daniel J. Eisenstein, Mariangela Bernardi, Mariangela Bernardi, Mariangela Bernardi, Jon Loveday, Alex Szalay, Michael A. Strauss, Andrew J. Connolly, J. Brinkmann,
Average spectra of massive galaxies in the Sloan Digital Sky Survey The Astrophysical Journal. ,vol. 585, pp. 694- 713 ,(2003) ,
10.1086/346233