@article{MZM_1970_8_4_a2,
     author = {V. M. Badkov},
     title = {Approximation of functions by partial sums of {Fourier} series in polynomials orthogonal on an interval},
     journal = {Matemati\v{c}eskie zametki},
     pages = {431--441},
     publisher = {mathdoc},
     volume = {8},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1970_8_4_a2/}
}