Boshkayev, K.A., K. Baiseitov, Zh.N. Brisheva, and A. Tlemisov. 2018. “Investigation of the Motion of Test Particles in the Gravitational Field of Axially Symmetric Central Body in Classical Physics”. Recent Contributions to Physics 2018 (3):84-98. https://bph.kaznu.kz/index.php/zhuzhu/article/view/787.