High Temperature Matter and Neutrino Spectra from Microscopic Black   Holes
  The spectrum of neutrinos produced by the outflow of high temperature matter surrounding microscopic black holes is calculated for neutrino energies between one GeV and the Planck energy. The results may be applicable for the last few hours and minutes of a microscopic black hole's lifetime. 
R. G. Daghigh and J. I. Kapusta