@article{MZM_2010_88_4_a3,
     author = {S. A. Gritsenko},
     title = {On a {Problem} of {Karatsuba}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {517--528},
     publisher = {mathdoc},
     volume = {88},
     number = {4},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2010_88_4_a3/}
}