@article{FPM_1997_3_4_a4,
     author = {S. V. Konyagin},
     title = {On approximative properties of arbitrary closed sets in {Banach} spaces},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {979--989},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1997_3_4_a4/}
}