Geodesic
Best partial approximations of functions, absolute convergence of Fourier series, and nuclearity of Hilbert–Schmidt operators
Sbornik. Mathematics, Tome 4 (1968) no. 3, pp. 329-342 
M. F. Timan. Best partial approximations of functions, absolute convergence of Fourier series, and nuclearity of Hilbert–Schmidt operators. Sbornik. Mathematics, Tome 4 (1968) no. 3, pp. 329-342. http://geodesic.mathdoc.fr/item/SM_1968_4_3_a3/
@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{\textendash}Schmidt} operators},
     journal = {Sbornik. Mathematics},
     pages = {329--342},
     year = {1968},
     volume = {4},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1968_4_3_a3/}
}
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%P 329-342
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