Akhmanova, D.M., and A.Ye. Omirbekova. “On an Integral of Equation of Voltaire With Delta-Type Kernel”. Bulletin of the Karaganda University. Mathematics Series 77, no. 1 (March 28, 2015): 25–35. Accessed August 26, 2025. http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/7.