@InProceedings{JonahPaulDutr:2012:VaToEl,
               author = "Jonah, O. F. and de Paula, E. R. and Dutra, S. L. G.",
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "The variability of total electron content using GPS data over the 
                         south american sector",
                 year = "2012",
         organization = "Simp{\'o}sio Brasileiro de Geof{\'{\i}}sica Espacial e 
                         Aeronomia, 4. (SBGEA).",
  conference-location = "S{\~a}o Paulo, SP",
      conference-year = "10 a 14/09/2012",
        urlaccessdate = "09 maio 2024"
}