MARIA KUMAN. Why Solar Cycles? Modeling the Dynamics of Solar Activity. Global Journal of Science Frontier Research, [S. l.], v. 19, n. A10, p. 7–14, 2019. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/2548. Acesso em: 1 dec. 2022.