1.
Savchuk VV, Savchuk MV. Approximation of holomorphic functions of Zygmund class by Fejer means. Ukr. Mat. Zhurn. [Internet]. 2012Aug.25 [cited 2024Apr.26];64(8):1148-52. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2648