1. Taras Shevchenko National University of Kyiv, Physical Faculty, Kyiv, 64/13 Volodymyrs'ka St.
2. National University of Food Technologies, Ukraine, Kyiv-33, 68 Volodymyrs'ka St.
3. Institute of Chemistry of High-Molecular Compounds, Ukraine, Kyiv-160, 48 Kharkiv High Road