@article{JLT_2002_12_1_JLT_2002_12_1_a9,
     author = {G. Cairns },
     title = {The {Approximative} {Centre} of a {Lie} {Algebra}},
     journal = {Journal of Lie theory},
     pages = {205--216},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/JLT_2002_12_1_JLT_2002_12_1_a9/}
}