@article{VMUMM_2004_3_a12,
     author = {Z. Ditzian and S. Yu. Tikhonov},
     title = {Remark on the order of approximation by {Steklov} means},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {57--58},
     year = {2004},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2004_3_a12/}
}