@article{DE_1966_2_3_a1,
     author = {Yu. S. Bogdanov},
     title = {On detecting asymptotic stability by means of small $vd$-numbers},
     journal = {Differencialʹnye uravneni\^a},
     pages = {309--313},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1966_2_3_a1/}
}