@article{DM_2009_21_1_a2,
     author = {I. A. Kruglov},
     title = {On layers in the system of generators of the subdirect product of subgroups of a~finite group},
     journal = {Diskretnaya Matematika},
     pages = {52--65},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2009_21_1_a2/}
}