@article{DAN_1973_208_3_a11,
     author = {S. Z. Rafal'son},
     title = {The approximation of functions by algebraic polynomials in the $L_p$ metric},
     journal = {Doklady Akademii Nauk},
     pages = {545--547},
     publisher = {mathdoc},
     volume = {208},
     number = {3},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_208_3_a11/}
}