@article{GDZPPN002083787,
title = {Global Dimension of Differential Operator Rings. IV - Simple Modules.},
journal = {Forum mathematicum},
volume = {1},
year = {1989},
pages = {185-200},
zbl = {0656.16001},
url = {http://dml.mathdoc.fr/item/GDZPPN002083787}
}
Goodearl, Kenneth R. Global Dimension of Differential Operator Rings. IV - Simple Modules.. Forum mathematicum, Tome 1 (1989) pp. 185-200. http://gdmltest.u-ga.fr/item/GDZPPN002083787/