@article{DAN_1962_144_2_a5,
     author = {R. G. Mamedov},
     title = {Direct and inverse theorems in the theory of approximation of functions by $m$-singular integrals},
     journal = {Doklady Akademii Nauk},
     pages = {272--274},
     publisher = {mathdoc},
     volume = {144},
     number = {2},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_2_a5/}
}