1. Dynamic Programming and Invariant Imbedding in Structural Mechanics;Distéfano,1971
2. “Mathematical in Methods Engineering.”;von Karman,1940
3. “Linear Difference Equations.”;Miller,1968
4. “Differential-Difference Equations.”;Bellman,1963
5. “The Numerical Solution of Two-Point Problems in Ordinary Differential Equations.”;Fox,1957