Savchuk, V. V. (2003) “Best Linear Methods of Approximation of Functions of the Hardy Class $H_p$”, Ukrains’kyi Matematychnyi Zhurnal, 55(7), pp. 919-925. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3967 (Accessed: 21May2024).