1. Aida, S. and Kawabi, H.: Short time asymptotics of certain in nite dimensional di usion processes. Preprint (1998)
2. L'hypercontractivité et son utilisation en théorie des semigroupes
3. Bourbaki, N.: Espaces Vectoriels Topologiques (Livre V). Hermann, Paris 1955
4. On regularity properties of nonsymmetric ornstein-uhlenbeck semigroup inLPspaces
5. Cipriani, F.: Sobolev-Orlicz imbeddings, weak compactness and spectrum. Preprint No. 378/1999, Piazza Leonardo da Vinci