@article{SM_2010_201_7_a1,
     author = {A. A. Vasil'eva},
     title = {Estimates for the widths of weighted {Sobolev} classes},
     journal = {Sbornik. Mathematics},
     pages = {947--984},
     publisher = {mathdoc},
     volume = {201},
     number = {7},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2010_201_7_a1/}
}