%0 Journal Article %A P. G. Potseiko %A Y. A. Rovba %T Fejer means of rational Fourier – Chebyshev series and approximation of function $|x|^{s}$ %J Journal of the Belarusian State University. Mathematics and Informatics %D 2019 %P 18-34 %V 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/BGUMI_2019_3_a1/ %G ru %F BGUMI_2019_3_a1