Klepikov, Igor. “COVID-19. WHO CAN HELP US?”. International Journal of Research -GRANTHAALAYAH 8, no. 10 (November 7, 2020): 298–303. Accessed September 19, 2025. https://www.granthaalayahpublication.org/journals/granthaalayah/article/view/IJRG20_B10_3850.