Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_2019_6_a9, author = {N. A. Pismennyy}, title = {Almost periodic solutions of nonlinear {ODE} systems with two small parameters}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {89--92}, publisher = {mathdoc}, number = {6}, year = {2019}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2019_6_a9/} }
N. A. Pismennyy. Almost periodic solutions of nonlinear ODE systems with two small parameters. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (2019), pp. 89-92. http://geodesic.mathdoc.fr/item/IVM_2019_6_a9/