@article{DE_1971_7_11_a19,
     author = {M. V. Zaretskii},
     title = {An estimate of the jump of the highest exponent of invariant linear systems under the action of small perturbations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2094--2098},
     publisher = {mathdoc},
     volume = {7},
     number = {11},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_11_a19/}
}