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@article{FAA_1985_19_4_a18, author = {Yu. I. Lyubarskii}, title = {On the system $\{\exp(-\alpha\lambda_nt)\sin\lambda_nt\}_{n=1}^\infty$}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {94}, publisher = {mathdoc}, volume = {19}, number = {4}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1985_19_4_a18/} }
Yu. I. Lyubarskii. On the system $\{\exp(-\alpha\lambda_nt)\sin\lambda_nt\}_{n=1}^\infty$. Funkcionalʹnyj analiz i ego priloženiâ, Tome 19 (1985) no. 4. http://geodesic.mathdoc.fr/item/FAA_1985_19_4_a18/