Comment on "Universality of the 1/3 shot-noise suppression factor in   nondegenerate diffusive conductors"
  We argue that the nearly 1/3 suppression of shot noise in nondegenerate diffusive contacts recently obtained by Gonzalez et al. (cond-mat/9803372) is due to the specific choice of the energy-independent elastic scattering time. 
K. E. Nagaev