Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1972_203_4_a9, author = {Yu. A. Pykh}, title = {On stability of a class of systems of nonlinear differential equations}, journal = {Doklady Akademii Nauk}, pages = {766--768}, publisher = {mathdoc}, volume = {203}, number = {4}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1972_203_4_a9/} }
Yu. A. Pykh. On stability of a class of systems of nonlinear differential equations. Doklady Akademii Nauk, Tome 203 (1972) no. 4, pp. 766-768. http://geodesic.mathdoc.fr/item/DAN_1972_203_4_a9/