@article{01736441, title = {The approximative centre of a Lie algebra.}, journal = {Journal of Lie Theory}, volume = {12}, year = {2002}, pages = {205-216}, zbl = {1024.17002}, language = {en}, url = {http://dml.mathdoc.fr/item/01736441} }
Cairns, Grant. The approximative centre of a Lie algebra.. Journal of Lie Theory, Tome 12 (2002) pp. 205-216. http://gdmltest.u-ga.fr/item/01736441/