00794naa#a2200217#i#450# EN\INFRA-M\bibl\39952 /en/manage/index 20250215043248.6 2500-0535 20210630b2021####ek#y0engy0150####ca ENG RU Behavior of electron density in the ionosphere over Norilsk during the period of declining solar activity Journal article Moscow INFRA-M Academic Publishing LLC. 2021 3 с. Journal article local Геология. Геологические и геофизические науки. 55 ENG Yakovleva Olga Evgenyevna Kushnarenko Galina Petrovna Kuznetsova Galina Mihaylovna fht.editorum.ru /en/manage/index