VALENTINA V. UKRAINTSEVA. Spots on the Sun and Life on the Earth. Journal of Basic & Applied Sciences, [S. l.], v. 15, p. 73–77, 2019. DOI: 10.29169/1927-5129.2019.15.09. Disponível em: http://set-publisher.com/index.php/jbas/article/view/1825. Acesso em: 7 jul. 2024.