1. Dynamic Programming;Bellman,1957
2. E. Ghandour, “Propagation of disturbances in a random media”, to appear. J. Inst. of Math. and its Applications. to be published.
3. Dynamic programming, Fermat's Principle and stochastic Eikonal equations;Brandstatter;J. Franklin Inst.,1974
4. Stochastic control for small noise intensities;Fleming;SIAM J. Control,1971
5. Wave Propagation in Random Media;Frisch,1968