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@article{DAN_1971_199_3_a9, author = {N. K. Nikol'skii}, title = {Spectral analysis on the unitary spectrum. {The} point spectrum}, journal = {Doklady Akademii Nauk}, pages = {544--547}, publisher = {mathdoc}, volume = {199}, number = {3}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_3_a9/} }
N. K. Nikol'skii. Spectral analysis on the unitary spectrum. The point spectrum. Doklady Akademii Nauk, Tome 199 (1971) no. 3, pp. 544-547. http://geodesic.mathdoc.fr/item/DAN_1971_199_3_a9/