1. Scharmack, D. K.,Trajectory Optimization Problems, Advances in Control Systems, Theory and Applications, Vol. 5, Edited by C. T. Leondes, Academic Press, New York, New York, 1968.
2. Kelley, H. J.,Method of Gradients, Optimization Techniques, Edited by G. Leitmann, Academic Press, New York, New York, 1962.
3. Fox, L.,Numerical Solution of Ordinary and Partial Differential Equations, Pergamon Press, New York, New York, 1962.
4. Kenneth, P., andMcGill, R.,Two-Point Boundary-Value-Problem Techniques, Advances in Control Systems, Theory and Applications, Vol. 3, Edited by C. T. Leondes, Academic Press, New York, New York, 1966.
5. Falb, P. L., andDe Jong, J. L.,Some Successive Approximation Methods in Control and Oscillation Theory, Academic Press, New York, New York, 1969.