Support theorems in non-linear filtering. (English)
New trends in nonlinear control theory, Proc. Int. Conf. Nonlinear Syst., Nantes/Fr. 1988, Lect. Notes Control Inf. Sci. 122, 396-403 (1989).
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Hypoellipticité des équations aux derivées partielles stochastiques à coefficients aléatoires. (French)
Stochastic differential systems, Proc. IFIP-WG 7/1 Work. Conf., Marseille-Luminy/France 1984, Lect. Notes Control Inf. Sci. 69, 3-13 (1985).
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