@article{MZM_1996_59_1_a7,
     author = {Zh. V. Piyadina},
     title = {An~analog of the generalized {Hardy{\textendash}Littlewood} problem with almost prime numbers},
     journal = {Matemati\v{c}eskie zametki},
     pages = {81--94},
     year = {1996},
     volume = {59},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_59_1_a7/}
}