DE ABREU, Alessandro José; MARTIN, Inacio; DE JESUS, Rodolfo; BOLZAN, Mauricio; VENKATESH, Kavutarapu; FAGUNDES, Paulo; ALVES, Mauro; GENDE, Mauricio; KUMAR, Sanjay. Comparison of GPS-TEC measurements with IRI2012-TEC predictions in the Brazilian sector during the unusual solar minimum 2009. Annals of Geophysics, [S. l.], v. 60, n. 3, p. A0331, 2017. DOI: 10.4401/ag-7300. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/7300. Acesso em: 4 apr. 2026.