@article{SM_1995_83_1_a0,
     author = {P. V. Al'brecht},
     title = {Orders of moduli of continuity of operators of almost best approximation},
     journal = {Sbornik. Mathematics},
     pages = {1--22},
     publisher = {mathdoc},
     volume = {83},
     number = {1},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_83_1_a0/}
}