@article{DAN_1962_147_2_a7,
     author = {R. G. Mamedov},
     title = {The order and asymptotic value of an approximation of a non-differentiable function by positive linear operators of a specific type},
     journal = {Doklady Akademii Nauk},
     pages = {297--300},
     year = {1962},
     volume = {147},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_147_2_a7/}
}