Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1973_9_12_a0, author = {Yu. N. Bibikov}, title = {A certain critical case in the theory of stability of motion}, journal = {Differencialʹnye uravneni\^a}, pages = {2123--2135}, publisher = {mathdoc}, volume = {9}, number = {12}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1973_9_12_a0/} }
Yu. N. Bibikov. A certain critical case in the theory of stability of motion. Differencialʹnye uravneniâ, Tome 9 (1973) no. 12, pp. 2123-2135. http://geodesic.mathdoc.fr/item/DE_1973_9_12_a0/