@article{SM_1992_72_2_a16,
     author = {\`E. M. Galeev},
     title = {Order estimates of smallest norms, with respect to the choice of $N$ harmonics, of derivatives of the {Dirichlet} and {Favard} kernels},
     journal = {Sbornik. Mathematics},
     pages = {567--578},
     publisher = {mathdoc},
     volume = {72},
     number = {2},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1992_72_2_a16/}
}