00649naa#a2200217#i#450# EN\INFRA-M\bibl\75259 20241222174931.7 2500-0535 20240625b2024####ek#y0engy0150####ca ENG RU HF radio path modeling by waveguide approach Journal article Moscow INFRA-M Academic Publishing LLC. 2024 8 с. Journal article local Физика. 53 ENG Ponomarchuk Sergey Nikolaevich Kurkin Vladimir Ivanovich Ilyin Nikolay Viktorovich Penzin Maksim Sergeevich zh-szf.ru