Comparative Analysis of Global and Regional Ionospheric Responses during Two Geomagnetic Storms on 3 and 4 February 2022. - Rumiana Bojilova; Plamen Mukhtarov (Remote. Sens., 2023)

Global Ionospheric Response During Extreme Geomagnetic Storm in May 2024. - Rumiana Bojilova; Plamen Mukhtarov; Dora Pancheva (Remote. Sens., 2024)