@article{DE_1975_11_11_a19,
     author = {A. G. Katranov},
     title = {A certain property of the oscillating solutions of nonlinear second order equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2092--2093},
     publisher = {mathdoc},
     volume = {11},
     number = {11},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_11_a19/}
}