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@article{FAA_1981_15_4_a6, author = {Yu. N. Valitskii}, title = {A four-point problem for a differential equation in a {Banach} space}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {69--70}, publisher = {mathdoc}, volume = {15}, number = {4}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1981_15_4_a6/} }
Yu. N. Valitskii. A four-point problem for a differential equation in a Banach space. Funkcionalʹnyj analiz i ego priloženiâ, Tome 15 (1981) no. 4, pp. 69-70. http://geodesic.mathdoc.fr/item/FAA_1981_15_4_a6/
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