@article{TM_2021_312_a5,
     author = {S. V. Bochkarev},
     title = {Inequalities for {Orthogonal} {Series} and a {Strengthening} of the {Carleman--Olevskii} {Theorem} for {Complete} {Orthonormal} {Systems}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {111--130},
     publisher = {mathdoc},
     volume = {312},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2021_312_a5/}
}