Baskaradas, James Arokiasami, Silvio Bianchi, Marco Pietrella, Michael Pezzopane, Umberto Sciacca, and Enrico Zuccheretti. 2014. “Description of Ionospheric Disturbances Observed by Vertical Ionospheric Sounding at 3 MHz”. Annals of Geophysics 57 (1):A0187. https://doi.org/10.4401/ag-6345.