00885naa#a2200229#i#450# EN\\bibl\75783 20260212141158.4 2500-0535 20240625b2024####ek#y0engy0150####ca ENG RU Variability of ionospheric ionization over Eurasia according to data from a high-latitude ionosonde chain during extreme magnetic storms in 2015 Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2024 13 с. Journal article local Геология. Геологические и геофизические науки. 55 ENG Chernigovskaya Marina Arturovna Setov Artem Gennadyevich Ratovsky Konstantin Gennadyevich Kalishin Alexey Sergeevich Stepanov Aleksandr Egorovich zh-szf.ru