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@article{MZM_1986_40_6_a5, author = {V. V. Filippov}, title = {The existence theorem of the solution of an ordinary differential equation}, journal = {Matemati\v{c}eskie zametki}, pages = {743--748}, publisher = {mathdoc}, volume = {40}, number = {6}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_6_a5/} }
V. V. Filippov. The existence theorem of the solution of an ordinary differential equation. Matematičeskie zametki, Tome 40 (1986) no. 6, pp. 743-748. http://geodesic.mathdoc.fr/item/MZM_1986_40_6_a5/