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@article{DE_1967_3_9_a5, author = {N. A. Ivanov}, title = {On a theorem of {Carath\'eodory}}, journal = {Differencialʹnye uravneni\^a}, pages = {1471--1476}, publisher = {mathdoc}, volume = {3}, number = {9}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1967_3_9_a5/} }
N. A. Ivanov. On a theorem of Carath\'eodory. Differencialʹnye uravneniâ, Tome 3 (1967) no. 9, pp. 1471-1476. http://geodesic.mathdoc.fr/item/DE_1967_3_9_a5/