Gevorgian, P. S. “ON EQUIVARIANT MOVABILITY OF PLANE INVARIANT COMPACTS”. Proceedings of the YSU A: Physical and Mathematical Sciences 35, no. 3 (196) (October 31, 2001): 26–30. Accessed January 21, 2026. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol35_no3_2001_pp026-030.