Hard pomeron contribution to forward elastic scattering
  The introduction of a hard singularity in fits to total cross sections and to the ratio of real to imaginary parts enables to reproduce perfectly the data for sqrt(s)< 100 GeV using only simple-pole parametrisations, both for the soft and for the hard pomerons. 
J.R. Cudell, A. Lengyel, E. Martynov and O.V. Selyugin