Bilitza, Dieter, Joseph Olwendo, Alessio Pignalberi, and Michael Pezzopane. “Preface on the Special Issue “International Reference Ionosphere: Improvement and Evaluation of a Global Standard"”. Annals of Geophysics 69, no. 2 (April 28, 2026): P214. Accessed May 13, 2026. https://www.annalsofgeophysics.eu/index.php/annals/article/view/9594.