Pseudorapidity spectra of relativistic particles emitted in the Au and   Pb induced reactions at high energies
  The structure of the pseudorapidity spectra of charged relativistic particles with beta > 0.7 measured in Au+Em and Pb+Em collisions at AGS and SPS energies are analyzed using Fourier transformation method and maximum entropy one. The dependences of these spectra on the number of fast target protons (g-particles) are studied. They show visually some plateau and "shoulder" which are at least three selected points on the distributions. The plateau seems wider in Pb+Em reactions. The existing of plateau is expected for the parton models. The maximum entropy method confirms the existence of the plateau and the shoulder of the distributions. 
B.Z. Belashev, M.K. Suleymanov, S. Vok\'al, J. Vrl\'akov\'a, M.Ajaz,   K.H.Khan, Ali Zaman, Z. Wazir
nucl-ex hep-ex