00868naa#a2200241#i#450# EN\\bibl\33969 20260310061455.2 2500-0535 20191217b2019####ek#y0engy0150####ca ENG RU Determination of ULF-wave characteristics most strongly reacting to minor changes of ionospheric electron density in a high-latitude region Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2019 9 с. Journal article local Математика. 51 Физика. 53 ENG Akhmetov Oleg Irshatovich Mingalev Igor Viktorovich Mingalev Oleg Viktorovich Suvorova Zoya Viktorovna Belahovskiy Vladimir Borisovich Chernyakov Sergey Mihaylovich zh-szf.ru