Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1987_12_a15, author = {E. V. Voskresenskiǐ}, title = {Asymptotic equivalence of nonlinear differential equations}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {72--74}, publisher = {mathdoc}, number = {12}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1987_12_a15/} }
E. V. Voskresenskiǐ. Asymptotic equivalence of nonlinear differential equations. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1987), pp. 72-74. http://geodesic.mathdoc.fr/item/IVM_1987_12_a15/