Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1999_35_6_a2, author = {M. Gillenberg and A. V. Osipov}, title = {Limit cycles in the two-dimensional {May} problem}, journal = {Differencialʹnye uravneni\^a}, pages = {733--737}, publisher = {mathdoc}, volume = {35}, number = {6}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1999_35_6_a2/} }
M. Gillenberg; A. V. Osipov. Limit cycles in the two-dimensional May problem. Differencialʹnye uravneniâ, Tome 35 (1999) no. 6, pp. 733-737. http://geodesic.mathdoc.fr/item/DE_1999_35_6_a2/