@article{MZM_1967_2_2_a7,
     author = {\`E. A. Storozhenko},
     title = {The rapidity of approximation of functions by the de la {Vall\'ee} {Poussin} means of their orthogonal expansions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {175--186},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1967_2_2_a7/}
}