M. M. Abdildin, M. E. Abishev, N. A. Beissen, and K. A. Boshkayev, “THE UNIQUENESS OF LAGRANGE FUNCTION OF TWO ROTATING BODIES AND FIRST APPROXIMATION METRIC”, Rec.Contr.Phys., vol. 2009, no. 1, pp. 111–115, Mar. 2009, Accessed: Jul. 18, 2026. [Online]. Available: https://bph.kaznu.kz/index.php/zhuzhu/article/view/184