@article{DE_1970_6_2_a2,
     author = {B. F. Bylov},
     title = {A reduction to block-triangle form, and necessary and sufficient conditions for the stability of the characteristic exponents of a linear system of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {243--252},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_2_a2/}
}