@article{DAN_1982_262_6_a4,
     author = {V. A. Kofanov},
     title = {Approximation in the mean of classes of differentiable functions by algebraic polynomials},
     journal = {Doklady Akademii Nauk},
     pages = {1304--1306},
     publisher = {mathdoc},
     volume = {262},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_262_6_a4/}
}