1.
Akhmet MU, Dauylbayev MK, Mirzakulova AE, Atakhan N. Singularly perturbed linear oscillator with piecewise-constant argument. JMMCS [Internet]. 2018 Aug. 27 [cited 2025 Apr. 3];97(1):3-13. Available from: https://bm.kaznu.kz/index.php/kaznu/article/view/480