@article{DAN_1964_157_2_a13,
     author = {G. M. Henkin},
     title = {Linear superpositions of continuously differentiable functions},
     journal = {Doklady Akademii Nauk},
     pages = {288--290},
     publisher = {mathdoc},
     volume = {157},
     number = {2},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_2_a13/}
}