М.Дж. Минглибаев, and А.Қ. Кушекбай. “Equations of Translational-Rotational Motion of the Problem of Three Axisymmetric Bodies With Variable Masses, Sizes and Shapes”. Bulletin of L.N. Gumilyov Eurasian National University. Mathematics, Computer Science, Mechanics Series, vol. 127, no. 2, June 2019, pp. 58-65, https://bulmathmc.enu.kz/index.php/main/article/view/47.