ELIAS, A. G.; ORTIZ DE ADLER, N. Forecast of solar maximum and minimum dates for solar cycles 23 to 29. Annals of Geophysics, [S. l.], v. 41, n. 1, 1998. DOI: 10.4401/ag-3790. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3790. Acesso em: 25 apr. 2024.