Zheldybayeva B, Koshchanova G, Amangosova A, Dzhugembayeva B, Turebayeva G, Kasymkhanova A, et al. Harmonic analysis of a periodic electrical signal using the Mathcad package. Rec.Contr.Phys. [Internet]. 2025 Mar. 20 [cited 2026 Jul. 18];96(1):77-8. Available from: https://bph.kaznu.kz/index.php/zhuzhu/article/view/1942