Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1989_25_5_a21, author = {A. Yu. Aleksandrov}, title = {On the existence of recurrent solutions of a class of differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {902--903}, publisher = {mathdoc}, volume = {25}, number = {5}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_5_a21/} }
A. Yu. Aleksandrov. On the existence of recurrent solutions of a class of differential equations. Differencialʹnye uravneniâ, Tome 25 (1989) no. 5, pp. 902-903. http://geodesic.mathdoc.fr/item/DE_1989_25_5_a21/