@article{IM2_1969_3_1_a3, author = {\`E. A. Storozhenko}, title = {On the order of approximation by {Fej\'er} sums}, journal = {Izvestiya. Mathematics }, pages = {37--49}, publisher = {mathdoc}, volume = {3}, number = {1}, year = {1969}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1969_3_1_a3/} }