Mayemerova, G. M., M. Zh. Minglibayev, and A. N. Prokopenya. “Protoplanetary Three-Body Problem With Variable Masses and Its Solutions”. International Journal of Mathematics and Physics 6, no. 2 (December 26, 2015): 36–40. Accessed May 3, 2024. https://ijmph.kaznu.kz/index.php/kaznu/article/view/146.