2014. INVESTIGATIONS OF BIS-CHROMOPHORE SYSTEMS: RELATIONSHIP BETWEEN SPECTRAL BEHAVIOUR AND CHARGE TRANSFER IN 2-(3-COUMAROYL)-BENZOPYRYLIUM PERCHLORATES: UDC 544.431.13 + 535.372 + 574.814.1. Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry. 50, 1 (Nov. 2014), 74–77.