Bilitza, Dieter, Vladimir Truhlik, Omura Yoshihara, and Mark B. Moldwin. “Development and Improvement of the International Reference Ionosphere With Special Emphasis on the Topside and Extension to the Plasmasphere”. Annals of Geophysics 67, no. 4 (October 31, 2024): SA443. Accessed May 13, 2026. https://www.annalsofgeophysics.eu/index.php/annals/article/view/9145.