Zheldybayeva, B.S., G.R. Koshchanova, A.G. Amangosova, B.A. Dzhugembayeva, G.B. Turebayeva, A.K. Kasymkhanova, Sh.J. Syrbaeva, L.S. Kainbayeva, and Mukushev B.А. “Harmonic Analysis of a Periodic Electrical Signal Using the Mathcad Package”. Recent Contributions to Physics 96, no. 1 (March 20, 2025): 77–87. Accessed July 16, 2026. https://bph.kaznu.kz/index.php/zhuzhu/article/view/1942.