KOVALCHUK, M.; HIRNYAK, M. Investigation of physical conditions of the Fraunhofer lines formation in the solar photosphere. Известия Крымской астрофизической обсерватории, [S. l.], v. 109, n. 2, p. 72–72, 2013. Disponível em: https://jncrao.ru/index.php/izvcrao/article/view/355. Acesso em: 25 ноя. 2024.