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@article{DAN_1964_158_5_a1, author = {K. V. Valikov}, title = {Characteristic indices of solutions of differential equations in a {Banach} space}, journal = {Doklady Akademii Nauk}, pages = {1010--1013}, publisher = {mathdoc}, volume = {158}, number = {5}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_5_a1/} }
K. V. Valikov. Characteristic indices of solutions of differential equations in a Banach space. Doklady Akademii Nauk, Tome 158 (1964) no. 5, pp. 1010-1013. http://geodesic.mathdoc.fr/item/DAN_1964_158_5_a1/