Savchuk VV, Savchuk MV, Chaichenko SO. Approximation of bounded holomorphic and harmonic functions by Fejér means. Ukr. Mat. Zhurn. [Internet]. 2019Apr.25 [cited 2024Dec.4];71(4):516-42. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1455