\bib{2002/kantor} \yr 2002 \mr 2003a:20026 \by William M. Kantor \by \'Akos Seress \paper Prime power graphs for groups of Lie type \jour Journal of Algebra \vol 247 \pages 370--434 \url http://dx.doi.org/10.1006/jabr.2001.9016 \endref