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@article{DAN_1968_180_4_a3, author = {V. P. Zaharyuta}, title = {The quasi-equivalence of bases in finite centers of {Hilbert} scales}, journal = {Doklady Akademii Nauk}, pages = {786--788}, publisher = {mathdoc}, volume = {180}, number = {4}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_180_4_a3/} }
V. P. Zaharyuta. The quasi-equivalence of bases in finite centers of Hilbert scales. Doklady Akademii Nauk, Tome 180 (1968) no. 4, pp. 786-788. http://geodesic.mathdoc.fr/item/DAN_1968_180_4_a3/