Grechana, O. V. “Spectral Characteristics and Electrical Structure of coumarine’s Synthetics Derivatives. P a R T II. Investigating of UV-Spectra of Dicoumarin and Ethylbiscoumacetatum (neodicoumarine)”. Farmatsevtychnyi zhurnal0, no. 3 (February 12, 2019): 67-72. Accessed August 10, 2022. https://pharmj.org.ua/index.php/journal/article/view/405.