@article{GMJ_2002__9_4_50905,
     author = {Datuashvili, T.},
     title = {Central series for groups with action and {Leibniz} algebras.},
     journal = {Georgian mathematical journal},
     pages = {671--682},
     year = {2002},
     volume = {9},
     number = {4},
     zbl = {1045.17009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_2002__9_4_50905/}
}