APOSTOLOV, E. M.; ALBERCA, L.; ALTADILL, D. Solar cycle and seasonal behaviour of quasi two and rive day oscillations in the time variations of fOF2. Annals of Geophysics, [S. l.], v. 37, n. 2, 1994. DOI: 10.4401/ag-4225. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4225. Acesso em: 28 mar. 2024.