@article{MZM_2018_103_2_a9,
     author = {A. A. Uvakin},
     title = {On {Two-Dimensional} {Sums} in {Abelian} {Groups}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {273--294},
     publisher = {mathdoc},
     volume = {103},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2018_103_2_a9/}
}