%0 Journal Article %A A. N. Godunov %A A. N. Solov'ev %T The Gibbs phenomenon and approximation properties of summation methods for Fourier series %J Doklady Akademii Nauk %D 1975 %P 269-272 %V 223 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_223_2_a1/ %G ru %F DAN_1975_223_2_a1