de Abreu AJ, Martin I, de Jesus R, Bolzan M, Venkatesh K, Fagundes P, et al. Comparison of GPS-TEC measurements with IRI2012-TEC predictions in the Brazilian sector during the unusual solar minimum 2009. Ann. Geophys. [Internet]. 2017 May 4 [cited 2026 Apr. 4];60(3):A0331. Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/7300