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@article{DAN_1960_130_3_a1, author = {S. G. Krein}, title = {On interpolation theorem in operator theory}, journal = {Doklady Akademii Nauk}, pages = {491--494}, publisher = {mathdoc}, volume = {130}, number = {3}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_130_3_a1/} }
S. G. Krein. On interpolation theorem in operator theory. Doklady Akademii Nauk, Tome 130 (1960) no. 3, pp. 491-494. http://geodesic.mathdoc.fr/item/DAN_1960_130_3_a1/