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@article{IVM_1967_9_a11, author = {N. I. Shkil'}, title = {The asymptotic solution of a~system of differential equations with small parameter}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {99--104}, publisher = {mathdoc}, number = {9}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1967_9_a11/} }
N. I. Shkil'. The asymptotic solution of a~system of differential equations with small parameter. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1967), pp. 99-104. http://geodesic.mathdoc.fr/item/IVM_1967_9_a11/