Geodesic
On Exponential Summability of Rectangular Partial Sums of Double Trigonometric Fourier Series
Matematičeskie zametki, Tome 104 (2018) no. 5, pp. 667-679

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In this paper, we study the a.e. exponential strong summability problem for the rectangular partial sums of double trigonometric Fourier series of functions in $L\log L$.
Keywords: double Fourier series, strong summability, exponential means. 
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     author = {U. Goginava and G. Karagulian},
     title = {On {Exponential} {Summability} of {Rectangular} {Partial} {Sums} of {Double} {Trigonometric} {Fourier} {Series}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {667--679},
     publisher = {mathdoc},
     volume = {104},
     number = {5},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2018_104_5_a3/}
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U. Goginava; G. Karagulian. On Exponential Summability of Rectangular Partial Sums of Double Trigonometric Fourier Series. Matematičeskie zametki, Tome 104 (2018) no. 5, pp. 667-679. http://geodesic.mathdoc.fr/item/MZM_2018_104_5_a3/