@article{MZM_2016_99_4_a2,
     author = {M. I. Dyachenko and E. D. Nursultanov and M. E. Nursultanov},
     title = {The {Hardy--Littlewood} {Theorem} for {Multiple} {Fourier} {Series} with {Monotone} {Coefficients}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {502--510},
     publisher = {mathdoc},
     volume = {99},
     number = {4},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2016_99_4_a2/}
}