@article{DE_1973_9_6_a3,
     author = {O. A. Kastritsa and G. N. Petrovskiǐ},
     title = {The integral configurations of linear differential systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1019--1025},
     publisher = {mathdoc},
     volume = {9},
     number = {6},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_6_a3/}
}