@article{DAN_1976_226_4_a7,
     author = {N. Ya. Kruglyak},
     title = {Imbedding theorems, interpolation of operators, and the {Nash{\textendash}Moser} implicit function theorem},
     journal = {Doklady Akademii Nauk},
     pages = {771--773},
     year = {1976},
     volume = {226},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_226_4_a7/}
}