PACS:94.20.dg, 94.20.dj, 94.20.dv (all) DOI:10.1070/PU1972v014n06ABEH004792 URL: https://ufn.ru/en/articles/1972/6/r/ Citation: Berkeliev M, Dzhemilev G G, Muradov A, Ovezgel’dyev O, Shirmamedov M "Certain Results from Study of the Physics of the Ionosphere" Sov. Phys. Usp.14 798–800 (1972)