Abdildin, M. M., Abishev, M. E., Beissen, N. A., & Boshkayev, K. A. (2009). THE UNIQUENESS OF LAGRANGE FUNCTION OF TWO ROTATING BODIES AND FIRST APPROXIMATION METRIC. Recent Contributions to Physics, 2009(1), 111-115. https://bph.kaznu.kz/index.php/zhuzhu/article/view/184