Shahinyan, S. G. (2023). ON OPTIMAL STABILIZATION OF PART OF VARIABLES OF ROTARY MOVEMENT OF A RIGID BODY WITH ONE FIXED POINT IN THE CASE OF SOPHIA KOVALEVSKAYA. Proceedings of the YSU A: Physical and Mathematical Sciences, 57(2 (261), 51–61. https://doi.org/10.46991/PYSU:A/2023.57.2.051