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@article{DE_1997_33_1_a3, author = {V. D. Budaev}, title = {On {Hilbert} and {Bessel} inequalities for some sine, cosine and exponential systems}, journal = {Differencialʹnye uravneni\^a}, pages = {19--24}, publisher = {mathdoc}, volume = {33}, number = {1}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1997_33_1_a3/} }
V. D. Budaev. On Hilbert and Bessel inequalities for some sine, cosine and exponential systems. Differencialʹnye uravneniâ, Tome 33 (1997) no. 1, pp. 19-24. http://geodesic.mathdoc.fr/item/DE_1997_33_1_a3/