@article{DE_1995_31_2_a1,
     author = {N. A. Izobov and A. V. Filiptsov},
     title = {Lower {Perron} exponents of linear systems with diagonal approximation and with exponentially decreasing perturbations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {197--205},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_2_a1/}
}