Sun J, Zhang X-J, Wang S, Gong Z-Q, Fang G-Y. Multi-quasi-parabolic ionosphere model with EF-valley. Ann. Geophys. [Internet]. 2016 May 6 [cited 2026 Mar. 31];59(2):A0213. Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/6780