Environmental Effects on the Faint End of the Luminosity Function
  Recent studies have demonstrated that many galaxy clusters have luminosity functions (LFs) which are steep at the faint end. However, it is equally clear that not all clusters have identical LFs. In this paper we explore whether the variation in LF shape correlates with other cluster or environmental properties. 
S. Phillipps, J. B. Jones (Univ. Bristol), R. M. Smith (Univ. Wales,   Cardiff), W. J. Couch, S. P. Driver (Univ. New South ...