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@article{DAN_1991_316_3_a8, author = {N. K. Rakhmetov}, title = {Uniqueness of the element of best approximation in some function}, journal = {Doklady Akademii Nauk}, pages = {553--557}, publisher = {mathdoc}, volume = {316}, number = {3}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_3_a8/} }
N. K. Rakhmetov. Uniqueness of the element of best approximation in some function. Doklady Akademii Nauk, Tome 316 (1991) no. 3, pp. 553-557. http://geodesic.mathdoc.fr/item/DAN_1991_316_3_a8/