00717naa#a2200193#i#450# EN\\bibl\57426 20260212171231.4 2712-9640 20230629b2023####ek#y0engy0150####ca 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 9 с. Journal article local Физика. 53 Borisova Tatiana Dmitrievna Blagoveshchenskaya Nataly Fedorovna Kalishin Alexey Sergeevich zh-szf.ru