@article{DE_1969_5_4_a15,
     author = {G. A. Leonov},
     title = {A certain hypothesis in the theory of the stability of nonlinear systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {753--756},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_4_a15/}
}