@article{MZM_1998_64_2_a8,
     author = {A. A. Karatsuba},
     title = {Regular sets in residual classes},
     journal = {Matemati\v{c}eskie zametki},
     pages = {224--228},
     publisher = {mathdoc},
     volume = {64},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1998_64_2_a8/}
}