@article{MZM_2001_69_5_a1,
     author = {\`E. M. Galeev},
     title = {Widths of the {Besov} {Classes} $B_{p,\theta}^r(\mathbb T^d)$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {656--665},
     publisher = {mathdoc},
     volume = {69},
     number = {5},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_69_5_a1/}
}