00757naa#a2200205#i#450# EN\INFRA-M\bibl\14599 20250218210139.2 2712-9640 20170417b2017####ek#y0engy0150####ca RUS RU Estimating the absolute total electron content based on single-frequency satellite radio navigation GPS/GLONASS data Journal article Moscow INFRA-M Academic Publishing LLC. 2017 6 с. Journal article local Геология. Геологические и геофизические науки. 55 RUS Yasyukevich Yury Vladimirovich Mylnikova Anna Aleksandrovna Ivanov Vsevolod Borisovich naukaru.ru