%0 Journal Article
%A Niels Jacob
%T Feller semigroups, Dirchlet forms, and pseudo differential operators.
%J Forum mathematicum
%D 1992
%P 433-446
%V 4
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141686/
%F FORUM_1992__4_6_141686