@article{SM_1987_57_1_a3,
     author = {M. I. Dyachenko},
     title = {On the convergence of double trigonometric series and {Fourier} series with monotone coefficients},
     journal = {Sbornik. Mathematics},
     pages = {57--75},
     publisher = {mathdoc},
     volume = {57},
     number = {1},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1987_57_1_a3/}
}