@article{JRAM_1989__395_153119,
     author = {Kenneth D. Johnson},
     title = {The centralizer of a {Lie} algebra in an enveloping algebra.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {196--201},
     publisher = {mathdoc},
     volume = {395},
     year = {1989},
     zbl = {0661.17010},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1989__395_153119/}
}