Fotiadis, D. N., S. S. Kouris, V. Romano, and B. Zolesi. “Climatology of IonosphericF-Region Disturbances”. Annals of Geophysics 47, no. 4 (December 25, 2004). Accessed April 26, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3345.