@article{TM_2013_280_a5,
     author = {A. A. Vasil'eva},
     title = {Widths of weighted {Sobolev} classes on {a~John} domain},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {97--125},
     publisher = {mathdoc},
     volume = {280},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2013_280_a5/}
}