@article{MZM_1994_55_2_a13,
     author = {N. M. Timofeev and M. B. Khripunova},
     title = {Distribution of numbers with a given number of prime divisors in progressions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {144--156},
     publisher = {mathdoc},
     volume = {55},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_55_2_a13/}
}