Denisov, M.S., and Ya.A. Beloglazova. “Аnticoronaviral Activity of Triterpenoids”. Biomedical Chemistry: Research and Methods 3, no. 2 (June 30, 2020): e00127. Accessed April 19, 2024. http://www.bmc-rm.org/index.php/BMCRM/article/view/127.