evidence for the existence of the exponential tails of the DOS are best suited for a test of the transition to the anomalous diffusion. Experimental data gives for such materials $T_0=U_0/k$ in the range from 380K to 750K [@Vissenberg:12964; @Street:165207; @Schubert:024203; @Frost:255]. This means that to compare our results for the nondispersive transport with the experimental data one have to carry out experiments at rather high temperature. At the moment there are no data for the thickness dependence of $W$ for such materials. Certainly, organic materials having $T_0\simeq 600-700$K cannot be used for the experimental test of our results, the temperature $T_0$ being far too high and we should expect a total thermal decomposition of such organic materials at much more low temperature. Yet materials with $T_0\simeq$400K could be used to study the nondispersive transport in general and dependence $W(L)$ for this transport regime in particular.

Our previous study of the behavior of the average carrier velocity $v$ in spatially correlated exponential random energy landscape shows that nonzero $v$ does exist for any generally acceptable correlation function for $T > T_0$ [@Novikov:24504]. Significant variation of $v$ with variation of electric field suitable for a reliable test of the theory could 