@article{DAN_1987_293_1_a0,
     author = {N. T. Amanov},
     title = {On the approximation of continuous functions by {Sz\'asz{\textendash}Mirak'yan} operators},
     journal = {Doklady Akademii Nauk},
     pages = {11--14},
     year = {1987},
     volume = {293},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_293_1_a0/}
}