@article{VMUMM_2004_5_a4,
     author = {A. P. Antonov},
     title = {Smoothness of sums of double trigonometric series with monotone coefficients},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {26--33},
     publisher = {mathdoc},
     number = {5},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2004_5_a4/}
}