Petyunin, G.P., and O.V. Khizhnichenko. 2019. “Determination of Dextropropoxyphene in Biologycal Materials by the Method of Gas-Liquid Chromatography”. Farmatsevtychnyi Zhurnal, no. 4 (July), 64-66. https://pharmj.org.ua/index.php/journal/article/view/635.