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@article{DE_1991_27_2_a2, author = {V. I. Rozhkov}, title = {Periodic solutions of linear singularly perturbed systems with certain singularities}, journal = {Differencialʹnye uravneni\^a}, pages = {200--207}, publisher = {mathdoc}, volume = {27}, number = {2}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_2_a2/} }
V. I. Rozhkov. Periodic solutions of linear singularly perturbed systems with certain singularities. Differencialʹnye uravneniâ, Tome 27 (1991) no. 2, pp. 200-207. http://geodesic.mathdoc.fr/item/DE_1991_27_2_a2/