TY  - JOUR
AU  - Niels Jacob
TI  - Feller semigroups, Dirchlet forms, and pseudo differential operators.
JO  - Forum mathematicum
PY  - 1992
SP  - 433
EP  - 446
VL  - 4
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141686/
ID  - FORUM_1992__4_6_141686
ER  -