@article{IVM_1985_8_a3,
     author = {A. V. Maslov},
     title = {On the question of best possible estimates for {Fourier} coefficients with respect to orthonormal systems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {23--34},
     publisher = {mathdoc},
     number = {8},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_8_a3/}
}