Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1995_31_11_a9, author = {A. P. Krishchenko}, title = {Localization of limit cycles}, journal = {Differencialʹnye uravneni\^a}, pages = {1858--1865}, publisher = {mathdoc}, volume = {31}, number = {11}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1995_31_11_a9/} }
A. P. Krishchenko. Localization of limit cycles. Differencialʹnye uravneniâ, Tome 31 (1995) no. 11, pp. 1858-1865. http://geodesic.mathdoc.fr/item/DE_1995_31_11_a9/