@article{TM_1992_194_a14,
     author = {V. N. Temlyakov},
     title = {Bilinear approximation and related questions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {229--248},
     year = {1992},
     volume = {194},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1992_194_a14/}
}