[1]
Mendes da Costa, A., Vilas Boas, J.W. y da Fonseca Junior, E.S. 2004. GPS Total Electron Content measurements at low latitudes in Brazil for low solar activity. Geofísica Internacional. 43, 1 (ene. 2004), 129–137. DOI:https://doi.org/10.22201/igeof.00167169p.2004.43.1.224.