@article{DAN_1990_314_4_a3,
     author = {S. M. Nikol'skii},
     title = {Approximation on a manifold by traces of functions of exponential},
     journal = {Doklady Akademii Nauk},
     pages = {786--789},
     year = {1990},
     volume = {314},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_4_a3/}
}