1. M. V. Vasil’ev, N. V. Mikhailov, and N. V. Vasil’eva, in Proceedings of the 16th SPb International Conference on Integrated Navigation Systems,2009 (Elektropribor, St. Petersburg, 2009), p. 283.
2. M. Seppänen, J. Ala-Luhtala, R. Piché, S. Martikainen, and S. Ali-Löytty, Navigation 59, 119 (2012).
3. S. Rautalin, S. Ali-Löytty, and R. Piché, in Proceedings of the 2017 International Conference on Localization and GNSS, Nottingham, UK (IEEE, 2018).
4. GeoS Modul, GeoStar Navigatsiya. http://geostar-navi.com/
5. 1990 Earth Parameters (PZ-90.11) (Voen.-Topogr. Upravl. Genshtaba VS RF, Moscow, 2014).