@article{DE_1987_23_12_a1,
     author = {M. I. Gil'},
     title = {Two-sided estimates for solutions of systems of linear differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2031--2036},
     publisher = {mathdoc},
     volume = {23},
     number = {12},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_12_a1/}
}