TY  - JOUR
AU  - Brownawell, W. Dale
TI  - On The Factorization of Partial Differential Equations
JO  - Canadian journal of mathematics
PY  - 1987
SP  - 825
EP  - 834
VL  - 39
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-040-8/
DO  - 10.4153/CJM-1987-040-8
ID  - 10_4153_CJM_1987_040_8
ER  -