@article{FORUM_1989__1_3_141611,
     author = {Kenneth R. Goodearl},
     title = {Global {Dimension} of {Differential} {Operator} {Rings.} {IV} - {Simple} {Modules.}},
     journal = {Forum mathematicum},
     pages = {185--200},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1989},
     zbl = {0656.16001},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1989__1_3_141611/}
}