@article{DE_1992_28_5_a24,
     author = {V. L. Kulik and A. N. Kulik},
     title = {Linear systems of differential equations that are regular on the whole axis},
     journal = {Differencialʹnye uravneni\^a},
     pages = {910--912},
     publisher = {mathdoc},
     volume = {28},
     number = {5},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_5_a24/}
}