Remez, E. Ya., and Gavrilуuk V. T. “On Construction of Chebyshev Approximations by Functions of Interpolating Classes ”. Ukrains’kyi Matematychnyi Zhurnal 23, no. 1 (December 25, 1970): 25–33. Accessed December 6, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/8475.