@article{TM_1997_219_a13,
     author = {V. A. Il'in},
     title = {One {More} {Generalization} of {Bessel's} {Inequality} and {Riesz--Fischer} {Theorem} for {Fourier} {Series} with {Respect} to {Uniformly} {Bounded} {Orthonormal} {Systems}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {211--219},
     publisher = {mathdoc},
     volume = {219},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1997_219_a13/}
}