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@article{FAA_1970_4_3_a10, author = {Yu. A. Brudnyi}, title = {Extension theorem}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {97--98}, publisher = {mathdoc}, volume = {4}, number = {3}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1970_4_3_a10/} }
Yu. A. Brudnyi. Extension theorem. Funkcionalʹnyj analiz i ego priloženiâ, Tome 4 (1970) no. 3, pp. 97-98. http://geodesic.mathdoc.fr/item/FAA_1970_4_3_a10/