@article{DE_1991_27_6_a0,
     author = {N. V. Azbelev and A. I. Domoshnitskii},
     title = {On the question of linear differential inequalities. {II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {923--931},
     publisher = {mathdoc},
     volume = {27},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_6_a0/}
}