@article{DAN_1966_166_2_a5,
     author = {N. P. Korneichuk and A. I. Polovina},
     title = {Approximation of continuous and differentiable functions by algebraic polynomials on an interval},
     journal = {Doklady Akademii Nauk},
     pages = {281--283},
     publisher = {mathdoc},
     volume = {166},
     number = {2},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_166_2_a5/}
}