BUMBA, V. Regularities in the solar background magnetic field . Известия Крымской астрофизической обсерватории, [S. l.], v. 104, n. 6, p. 87–94, 2009. Disponível em: https://jncrao.ru/index.php/izvcrao/article/view/853. Acesso em: 22 ноя. 2024.