Abdullayev FG, Küçükaslan M. On the Convergence of Fourier Series with Orthogonal Polynomials inside and on the Closure of a Region. Ukr. Mat. Zhurn. [Internet]. 2002 Oct. 25 [cited 2025 Dec. 5];54(10):1299-312. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4169