1 Balandin V.N.
2 Bryn M.Ya.
3 Menchikov I.V.
4 Yakupov A.Z.
Year: 
№: 
813
Pages: 
13–14
Citation:
Balandin V.N., 
Bryn M.Ya., 
Menchikov I.V., 
Yakupov A.Z., 
(2008) The main radiiuses calculation of the ellipsoid curvature by the spatial rectangular coordinates. Geodesy and cartography = Geodezia i Kartografia, 69(4), pp. 13–14. (In Russian).