00848naa#a2200217#i#4500001002300000005001700023011001400040100004100054101000800095102000700103200015300110210005100263215001000314608002700324675012700351700003400478700003100512700003200543700003400575856002100609EN\INFRA-M\bibl\10930320260319222912.4##a2500-0535##a20251210b2025####ek#y0engy0150####ca0#aENG##aRU1#aTrends in the F2-layer critical frequency from data obtained at the ionospheric station Yakutsk during the period from 1956 to 2017eJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2025##a7 с.##aJournal article2local##aИоносфера: теории, влияния ионосферы, распределение и т. д.. 550.388.2zENG#1aKobyakovagSargylana Egorovna#1aGololobovgArtem Yuryevich#1aKarimovgRustam Ramilyevich#1aStepanovgAleksandr Egorovich4#aiszf.editorum.ru