@article{DAN_1960_131_3_a15,
     author = {Yu. A. Shashkin},
     title = {Convergence of positive linear operators in the space of continuous functions},
     journal = {Doklady Akademii Nauk},
     pages = {525--527},
     publisher = {mathdoc},
     volume = {131},
     number = {3},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_3_a15/}
}