EFIMOVA, Taisia A.; TIMOSHCHENKO, Igor A.; ABRASHINA-ZHADAEVA, Natalia G. Fractional differential model of the spread of COVID-19. Journal of the Belarusian State University. Physics, [S. l.], n. 3, p. 40–48, 2021. DOI: 10.33581/2520-2243-2021-3-40-48. Disponível em: https://journals.bsu.by/index.php/physics/article/view/4132. Acesso em: 17 jul. 2026.