@article{GMJ_2002__9_4_51054,
     author = {Casas, J. M. and Ladra, M.},
     title = {Stem extensions and stem covers of {Leibniz} algebras.},
     journal = {Georgian Mathematical Journal},
     pages = {659--669},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {2002},
     zbl = {1051.17001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_2002__9_4_51054/}
}