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@article{MZM_1989_46_5_a10, author = {K. Alymkulov}, title = {A problem of singular perturbation with a limit cycle in a subsystem with fast time}, journal = {Matemati\v{c}eskie zametki}, pages = {89--91}, publisher = {mathdoc}, volume = {46}, number = {5}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1989_46_5_a10/} }
K. Alymkulov. A problem of singular perturbation with a limit cycle in a subsystem with fast time. Matematičeskie zametki, Tome 46 (1989) no. 5, pp. 89-91. http://geodesic.mathdoc.fr/item/MZM_1989_46_5_a10/