Aisagaliev, S. A., and S. S. Aisagalieva. “Constructive Theory of Boundary Value Problems for Linear Integral-Differential Equations”. Journal of Mathematics, Mechanics and Computer Science 87, no. 4 (September 29, 2015): 3–26. Accessed December 22, 2024. https://bm.kaznu.kz/index.php/kaznu/article/view/280.