@article{MZM_1999_66_2_a20,
     author = {A. A. Karatsuba and B. Novak},
     title = {Arithmetical problems with numbers of special type},
     journal = {Matemati\v{c}eskie zametki},
     pages = {314--317},
     publisher = {mathdoc},
     volume = {66},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1999_66_2_a20/}
}