@article{TM_1980_145_a1,
     author = {V. M. Badkov},
     title = {Approximation of functions in a~uniform metric by {Fourier} sums in orthogonal polynomials},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {20--62},
     year = {1980},
     volume = {145},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1980_145_a1/}
}