Denissyuk, E., и A. Serebryanskiy. «THE ORBIT OF THE STAR S2 ≡ S0-2 IN THE CENTER OF THE GALAXY». Academic Scientific Journal of Computer Science, вып. 3, июнь 2020 г., сс. 5-14, https://journals.nauka-nanrk.kz/physics-mathematics/article/view/443.