@article{DAN_1967_176_5_a3,
     author = {B. P. Demidovich},
     title = {An analog of the {Andronov{\textendash}Witt} theorem},
     journal = {Doklady Akademii Nauk},
     pages = {994--996},
     year = {1967},
     volume = {176},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_176_5_a3/}
}