@article{RM_1979_34_3_a15,
     author = {S. V. Pukhov},
     title = {Approximation of weight classes of {Sobolev} type},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {215--216},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1979},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1979_34_3_a15/}
}