Decision theory on dynamic domains nabla derivatives and the Hamilton-Jacobi-Bellman equation. - John Seiffertt; Donald C. Wunsch; Suman Sanyal (SMC, 2008)

Hamilton-Jacobi-Bellman Equations and Approximate Dynamic Programming on Time Scales. - John Seiffertt; Suman Sanyal; Donald C. Wunsch (IEEE Trans. Syst. Man Cybern. Part B, 2008)