The Weyl algebra and its field of fractions.
@article{1697, title = {The Weyl algebra and its field of fractions}, journal = {CUBO, A Mathematical Journal}, volume = {5}, year = {2003}, language = {en}, url = {http://dml.mathdoc.fr/item/1697} }
Cohn, Paul M. The Weyl algebra and its field of fractions. CUBO, A Mathematical Journal, Tome 5 (2003) . http://gdmltest.u-ga.fr/item/1697/