@article{TRSPY_2014_284_a13,
     author = {S. V. Konyagin},
     title = {Deviation of elements of {a~Banach} space from a~system of subspaces},
     journal = {Informatics and Automation},
     pages = {212--215},
     publisher = {mathdoc},
     volume = {284},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2014_284_a13/}
}