@article{DE_1990_26_4_a8,
     author = {M. P. Sidorevich and N. A. Lukashevich},
     title = {On a third-order nonlinear differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {618--621},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_4_a8/}
}