Title:   The subring of group cohomology constructed by
         permutation representations
Authors: David J. Green  (green@math.uni-wuppertal.de)
         Ian J. Leary    (ijl@maths.soton.ac.uk)
         Bj"orn Schuster (schuster@math.uni-wuppertal.de)
Date:    21 April 1999
Status:  Proc. Edinburgh Math. Soc. (2) 45 (2002), no. 1,241-253.

Abstract:
Each permutation representation of a finite group $G$ can be used to
pull cohomology classes back from a symmetric group to $G$.  We study the
ring generated by all classes that arise in this fashion, describing its
variety in terms of the subgroup structure of $G$.
  We also investigate the effect of restricting to special types of
permutation representations, such as $GL_n(F_p)$ acting on flags of subspaces.