THE EFFECT OF  THE SUBSTITUENT NATURE IN THE AZOBENZENE CHROMOPHORES ON DIFFRACTION EFFICIENCY OF POLARIZATION HOLOGRAMS: DOI: https://doi.org/10.17721/1728-2209.2019.1(56).7. (2019). Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry, 56(1), 30-33. https://chemistry.bulletin.knu.ua/article/view/8650