A. P. Musienko and A. S. Serdyuk, “Lebesgue-type inequalities for the de la Vallée-poussin sums on sets of entire functions”, Ukr. Mat. Zhurn., vol. 65, no. 5, pp. 642–653, May 2013, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2448