@article{Chernigovskaya2023ionospheric, author={Chernigovskaya, M.A. and Yasyukevich, A.S. and Khabituev, D.S.}, title={Ionospheric longitudinal variability in the Northern Hemisphere during magnetic storms in March 2012 from ionosonde and GPS/GLONASS data}, journal={Solar-Terrestrial Physics}, publisher={INFRA-M Academic Publishing LLC.}, year={2023}, pages={99-110}, volume={9}, issue={4}, }