POOLE, A. W. V.; POOLE, M. Long-term trends in f0 F2 over Grahamstown using Neural Networks. Annals of Geophysics, [S. l.], v. 45, n. 1, 2002. DOI: 10.4401/ag-3485. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3485. Acesso em: 20 may. 2024.