@article{MZM_2007_81_3_a7,
     author = {N. G. Moshchevitin and I. D. Shkredov},
     title = {On the {Multiplicative} {Properties} {Modulo~}$m$ of {Numbers} with {Missing} {Digits}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {385--404},
     publisher = {mathdoc},
     volume = {81},
     number = {3},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_81_3_a7/}
}