@article{MZM_1997_62_1_a17,
     author = {S. M. Dobrovolskii and R. K. Romanovskii},
     title = {Method of {Lyapunov} functions for almost-periodic systems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {151--153},
     publisher = {mathdoc},
     volume = {62},
     number = {1},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_62_1_a17/}
}