1. Martingales, the Malliavin calculus and hypoellipticity under general Hormander's conditions;Bismut;Z. Wahrsch.,1981
2. Subelliptic eigenvalue problems;Fefferman,1981
3. A Classification of the Second Order Degenerate Elliptic Operators and its Probabilistic Characterization;Ichihara;Z. Wahrsch. Gebiete,1974
4. Stochastic Differential Equations and Diffusion Processes;Ikeda,1981
5. Applications of the Malliavin calculus I. Stochastic Analysis;Kusuoka,1984