Noreddin MM, Tikhonenko NY. On convergence of the method of orthogonal polynomials of the approximate solution оf the second order integral equations with $\Pi$-kernels. Ukr. Mat. Zhurn. [Internet]. 2025 Jun. 30 [cited 2025 Dec. 7];43(2):223-9. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/9361