Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1984_20_5_a0, author = {\`E. I. Grudo}, title = {Construction of {Lyapunov} functions as $m$th order forms}, journal = {Differencialʹnye uravneni\^a}, pages = {739--745}, publisher = {mathdoc}, volume = {20}, number = {5}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_5_a0/} }
È. I. Grudo. Construction of Lyapunov functions as $m$th order forms. Differencialʹnye uravneniâ, Tome 20 (1984) no. 5, pp. 739-745. http://geodesic.mathdoc.fr/item/DE_1984_20_5_a0/