BILITZA, Dieter; OLWENDO, Joseph; PIGNALBERI, Alessio; PEZZOPANE, Michael. Preface on the Special Issue “International Reference Ionosphere: Improvement and Evaluation of a Global Standard". Annals of Geophysics, [S. l.], v. 69, n. 2, p. P214, 2026. DOI: 10.4401/ag-9594. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/9594. Acesso em: 13 may. 2026.