@article{MZM_2016_99_5_a1,
     author = {S. S. Volosivets},
     title = {Approximation of {Polynomials} in the {Haar} {System} in {Weighted} {Symmetric} {Spaces}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {649--657},
     publisher = {mathdoc},
     volume = {99},
     number = {5},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2016_99_5_a1/}
}