@article{DE_1991_27_9_a19,
     author = {L. I. Danilov and A. G. Ivanov},
     title = {A comparison theorem on the uniform oscillation of a linear equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1636--1637},
     publisher = {mathdoc},
     volume = {27},
     number = {9},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_9_a19/}
}