Determination of Vacancies Allocation in a Monocrystal of a   P-Dichlorobenzene Using a Method of the Raman Spectroscopy
  The method of Raman scattering is used to investigate the cross edge of a p-dichlorobenzene monocrystal, which was grown up by a Bridgmen method. Comparison of intensities of additional lines of a spectrum of the lattice oscillations of certain parts of an edge of a monocrystal with density of these fields has allowed to relate some lines to presence of vacancies in structure. 
M.A. Korshunov