@article{DE_1968_4_5_a7,
     author = {A. K. Lopatin},
     title = {The algebraic reducibility of systems of linear differential equations on a finite interval of definition of the independent variable. {II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {839--844},
     publisher = {mathdoc},
     volume = {4},
     number = {5},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_5_a7/}
}