@article{DAN_1962_142_3_a14,
     author = {A. L. Fuksman},
     title = {Local properties of certain approximation operators},
     journal = {Doklady Akademii Nauk},
     pages = {556--559},
     year = {1962},
     volume = {142},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_142_3_a14/}
}