TY  - JOUR
AU  - Jaak Peetre
TI  - On Estimating the Solutions of Hypoelliptic Differential Equations Near the Plane Boundary.
JO  - Mathematica Scandinavica
PY  - 1961
SP  - 337
EP  - 351
VL  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1961__9_165779/
ID  - MS2_1961__9_165779
ER  -