@article{SM_1968_4_3_a3,
     author = {M. F. Timan},
     title = {Best partial approximations of functions, absolute convergence of {Fourier} series, and nuclearity of {Hilbert--Schmidt} operators},
     journal = {Sbornik. Mathematics},
     pages = {329--342},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {1968},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1968_4_3_a3/}
}