c.
Калманова , Д. М., А. Е. Ашуров, and . А. Рахимова. “Application of the Approximation Method in the Algorithm for Determining the Position of a Geostationary Satellite”. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. PHYSICS. ASTRONOMY SERIES, vol. 133, no. 4, July 2022, pp. 8-15, doi:10.32523/2616-6836-2020-133-4-8-15.