Serdyuk, A.S. (2012) “Approximation by interpolation trigonometric polynomials on classes of periodic analytic functions”, Ukrains’kyi Matematychnyi Zhurnal, 64(5), pp. 698–712. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2609 (Accessed: 6 December 2025).