@article{AL_1989_28_3_a2,
     author = {Z. M. Kachemtseva},
     title = {On the wreath product of $Z$-groups},
     journal = {Algebra i logika},
     pages = {298--310},
     year = {1989},
     volume = {28},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1989_28_3_a2/}
}