00748naa#a2200205#i#450# EN\\bibl\57427 20260313084556.5 2500-0535 20230629b2023####ek#y0engy0150####ca ENG RU Spectral features of ionospheric plasma waves excited by powerful HF radio waves radiated at frequencies near electron gyroharmonics and F2-layer critical frequency Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2023 8 с. Journal article local Физика. 53 ENG Borisova Tatiana Dmitrievna Blagoveshchenskaya Nataly Fedorovna Kalishin Alexey Sergeevich ras.editorum.ru