@article{DE_1981_17_5_a0,
     author = {M. Bartushek},
     title = {On the properties of oscillating solutions of third-order ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {771--777},
     publisher = {mathdoc},
     volume = {17},
     number = {5},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_5_a0/}
}