@article{DAN_1967_177_5_a8,
     author = {B. L. Fridman},
     title = {An improvement in the smoothness of the functions in {A.\,N.~Kolmogorov's} theorem on superpositions},
     journal = {Doklady Akademii Nauk},
     pages = {1019--1022},
     publisher = {mathdoc},
     volume = {177},
     number = {5},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_177_5_a8/}
}