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@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/} }
S. V. Konyagin. On approximative properties of arbitrary closed sets in Banach spaces. Fundamentalʹnaâ i prikladnaâ matematika, Tome 3 (1997) no. 4, pp. 979-989. http://geodesic.mathdoc.fr/item/FPM_1997_3_4_a4/