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@article{DAN_1966_168_4_a10, author = {S. Ya. Yakubov}, title = {The {Cauchy} problem for differential equations of the second order in a {Banach} space}, journal = {Doklady Akademii Nauk}, pages = {759--762}, publisher = {mathdoc}, volume = {168}, number = {4}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_168_4_a10/} }
S. Ya. Yakubov. The Cauchy problem for differential equations of the second order in a Banach space. Doklady Akademii Nauk, Tome 168 (1966) no. 4, pp. 759-762. http://geodesic.mathdoc.fr/item/DAN_1966_168_4_a10/