@article{MZM_2015_98_4_a7,
     author = {A. A. Uvakin},
     title = {On {Two-Dimensional} {Sums} and {Differences}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {570--589},
     publisher = {mathdoc},
     volume = {98},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2015_98_4_a7/}
}