@article{DE_1967_3_12_a16,
     author = {I. N. Zboychik},
     title = {The asymptotic equivalence of the solutions of certain linear systems of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2161--2176},
     publisher = {mathdoc},
     volume = {3},
     number = {12},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_12_a16/}
}