Dauylbayev, M. K., and A. B. Uaissov. “Asymptotic Behavior of the Solutions of Boundary-Value Problems for Singularly Perturbed Integro-Differential Equations”. Ukrains’kyi Matematychnyi Zhurnal 71, no. 11 (February 9, 2026): 1466–1479. Accessed February 16, 2026. https://umj.imath.kiev.ua/index.php/umj/article/view/1529.