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@article{FORUM_1992__4_6_141686, author = {Niels Jacob}, title = {Feller semigroups, {Dirchlet} forms, and pseudo differential operators.}, journal = {Forum mathematicum}, pages = {433--446}, publisher = {mathdoc}, volume = {4}, number = {6}, year = {1992}, zbl = {0759.60078}, url = {http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141686/} }
Niels Jacob. Feller semigroups, Dirchlet forms, and pseudo differential operators.. Forum mathematicum, Tome 4 (1992) no. 6, pp. 433-446. http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141686/