@article{DAN_1961_139_2_a10,
     author = {V. A. Pliss},
     title = {Boundedness of solutions of certain non-linear third-order differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {302--304},
     publisher = {mathdoc},
     volume = {139},
     number = {2},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a10/}
}