@article{1102689796,
author = {Malm, D. R.},
title = {Simplicity of partial and Schmidt differential operator rings.},
journal = {Pacific J. Math.},
volume = {135},
number = {2},
year = {1988},
pages = { 85-112},
language = {en},
url = {http://dml.mathdoc.fr/item/1102689796}
}
Malm, D. R. Simplicity of partial and Schmidt differential operator rings.. Pacific J. Math., Tome 135 (1988) no. 2, pp. 85-112. http://gdmltest.u-ga.fr/item/1102689796/