M. Abdildin, N. Beiseen, K. Boshkaev, and A. Taukenova, “VELOCITY AS A FUNCTION OF STATE IN GR MECHANICS”, Rec.Contr.Phys., vol. 28, no. 1, Nov. 2021, Accessed: Sep. 05, 2026. Available: https://bph.kaznu.kz/index.php/zhuzhu/article/view/1521