@article{DAN_1962_146_5_a8,
     author = {R. G. Mamedov},
     title = {The asymptotic value of the approximation of multiply differentiable functions by positive linear operators},
     journal = {Doklady Akademii Nauk},
     pages = {1013--1016},
     publisher = {mathdoc},
     volume = {146},
     number = {5},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_146_5_a8/}
}