@article{MZM_1995_57_1_a15,
     author = {D. N. Cheban},
     title = {Converse of {Lyapunov's} theorem on asymptotic stability to the first approximation for $C$-analytic nonautonomous systems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {139--142},
     year = {1995},
     volume = {57},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1995_57_1_a15/}
}