@article{IIMI_2020_56_a6,
     author = {I. N. Sergeev},
     title = {Lyapunov, {Perron} and upper-limit stability properties of autonomous differential systems},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {63--78},
     publisher = {mathdoc},
     volume = {56},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2020_56_a6/}
}