M. Abishev, S. Toktarbay, M. Khassanov, and A. Abylayeva, “Propagation of a electromagnetic radiation in the strong magnetic quadrupole and gravitational field”, Rec.Contr.Phys., vol. 66, no. 3, pp. 4–11, Sep. 2018, Accessed: Sep. 06, 2026. Available: https://bph.kaznu.kz/index.php/zhuzhu/article/view/775