00697naa#a2200205#i#450# EN\\bibl\49668 20260314004916.6 2500-0535 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 4 с. Journal article local Геология. Геологические и геофизические науки. 55 ENG Chamua Minakshi Bhuyan Pradip K. Bhuyan Kalyan ras.editorum.ru