@article{DE_1981_17_12_a5,
     author = {Yu. A. Melentsova and G. N. Mil'shtein},
     title = {On the optimal estimate of the interval of nonoscillation for linear differential equations with bounded coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2160--2175},
     publisher = {mathdoc},
     volume = {17},
     number = {12},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_12_a5/}
}