Muralikrishna, P., L. P. Vieira, M. A. Abdu, y E. R. de Paula. 2004. «Deviations from Model Predictions in Measured Electron Density Profiles for Low Latitudes: A Critique». Geofísica Internacional 43 (2):165-72. https://doi.org/10.22201/igeof.00167169p.2004.43.2.167.