@article{TIMB_2008_16_2_a10,
     author = {N. S. Niparko},
     title = {The necessary condition of {Lyapunov} exponents stability of linear differential systems under degree decreasing perturbations},
     journal = {Trudy Instituta matematiki},
     pages = {105--117},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMB_2008_16_2_a10/}
}