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@article{TM_1967_91_a8, author = {L. A. Muravei}, title = {Riesz bases in $\mathfrak L_2(-1,1)$}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {113--131}, publisher = {mathdoc}, volume = {91}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1967_91_a8/} }
L. A. Muravei. Riesz bases in $\mathfrak L_2(-1,1)$. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Boundary problems for differential equations, Tome 91 (1967), pp. 113-131. http://geodesic.mathdoc.fr/item/TM_1967_91_a8/