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@article{MZM_1969_6_4_a13, author = {A. M. Popov}, title = {Estimates of solutions of some systems of differential equations with large retardation}, journal = {Matemati\v{c}eskie zametki}, pages = {483--488}, publisher = {mathdoc}, volume = {6}, number = {4}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1969_6_4_a13/} }
A. M. Popov. Estimates of solutions of some systems of differential equations with large retardation. Matematičeskie zametki, Tome 6 (1969) no. 4, pp. 483-488. http://geodesic.mathdoc.fr/item/MZM_1969_6_4_a13/