@article{TRSPY_1989_187_a12,
     author = {V. N. Temlyakov},
     title = {Bilinear approximation and applications},
     journal = {Informatics and Automation},
     pages = {191--215},
     publisher = {mathdoc},
     volume = {187},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1989_187_a12/}
}