For the first time the tri-axial ellipsoid was used as the reference surface for map and globe compiling. The coordinate systems were modified. The new cartographic projections were calculated. © 1992.
Bugaevsky, L. M., Krasnopevtseva, B. V., & Shingareva, K. B. (1992). Phobos map and Phobos globe. Advances in Space Research, 12(9), 17–21. https://doi.org/10.1016/0273-1177(92)90314-N