00822naa#a2200205#i#4500001002300000005001700023011001400040100004100054102000700095200015300102210005100255215001000306608002700316675012200343700003400465700003100499700003200530700003400562856002000596EN\INFRA-M\bibl\10901020260319211200.4##a2712-9640##a20251210b2025####ek#y0engy0150####ca##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##a8 с.##aJournal article2local##aИоносфера: теории, влияния ионосферы, распределение и т. д.. 550.388.2#1aKobyakovagSargylana Egorovna#1aGololobovgArtem Yuryevich#1aKarimovgRustam Ramilyevich#1aStepanovgAleksandr Egorovich4#aras.editorum.ru