N. Beissen, S. Toktarbay, M. Alimkulova, T. Yernazarov, and N. Shynggyskhan, “Numerical study of the deflection of a light beam passing through the magnetosphere of a magnetar under the influence of gravity and nonlinear electrodynamics of vacuum”, Rec.Contr.Phys., vol. 2025, no. 1, pp. 14–24, Mar. 2025, doi: 10.26577/RCPh20259212.