@article{01925943, title = {Stem extensions and stem covers of Leibniz algebras.}, journal = {Georgian Mathematical Journal}, volume = {9}, year = {2002}, pages = {659-669}, zbl = {1051.17001}, language = {en}, url = {http://dml.mathdoc.fr/item/01925943} }
Casas, J. M.; Ladra, M. Stem extensions and stem covers of Leibniz algebras.. Georgian Mathematical Journal, Tome 9 (2002) pp. 659-669. http://gdmltest.u-ga.fr/item/01925943/