@article{RM_1961_16_4_a20,
     author = {E. G. Gol'shtein},
     title = {On a generalization of {Chebyshev} best approximation problem},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1961_16_4_a20/}
}