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@article{DAN_1970_193_5_a2, author = {N. I. Gurarii}, title = {Some basis theorems in {Hilbert} space and {Banach} spaces}, journal = {Doklady Akademii Nauk}, pages = {974--977}, publisher = {mathdoc}, volume = {193}, number = {5}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_193_5_a2/} }
N. I. Gurarii. Some basis theorems in Hilbert space and Banach spaces. Doklady Akademii Nauk, Tome 193 (1970) no. 5, pp. 974-977. http://geodesic.mathdoc.fr/item/DAN_1970_193_5_a2/