1. A. V. Balakrishnan andL. W. Neustadt,Computing Methods in Optimization Problems, Academic Press, New York (1964).
2. R. Bellman,Dynamic Programming, Princeton University Press, Princeton, N.J. (1957).
3. A. E. Bryson andY. C. Ho,Applied Optimal Control, Blaisdell, Waltham (1969).
4. P. Dyer andS. R. McReynolds,The Computation and Theory of Optimal Control, Academic Press, New York (1970).
5. L. Fox andI. B. Parker,Chebyshev Polynomials in Numerical Analysis, Oxford University Press (1972).