(1)
Gunko, M. S.; Babenko, V. F.; Parfinovych, N. V. Optimal Recovery of Elements from Hilbert Space and Their Scalar Products by Fourier Coefficients Known With Error.
Ukr. Mat. Zhurn.
2020
,
72
(6), 736-750.
https://doi.org/10.37863/umzh.v72i6.1107
.