00691naa#a2200205#i#450# EN\\bibl\57863 20260224185557.2 2712-9640 20230328b2023####ek#y0engy0150####ca ENG RU A quiet day empirical model of electron density in the Indian equatorial F-region Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2023 5 с. Journal article local Геология. Геологические и геофизические науки. 55 ENG Chamua Minakshi Bhuyan Pradip K. Bhuyan Kalyan zh-szf.ru