Portyanko, V. S., S. N. Kovalenko, and L. N. Maloshtan. “Preclinical Study of the Gel for Gingivitis Treatment Specific Activity”. Farmatsevtychnyi Zhurnal, no. 3, Feb. 2019, pp. 83-87, https://pharmj.org.ua/index.php/journal/article/view/292.