1. Kalman, R. E., Ho, Y. C., andNarendra, K. S.,Controllability of Linear Systems, Contributions to Differential Equations, Vol. 1, Edited by J. P. Lasalle and J. B. Diaz, John Wiley and Sons (Interscience Publishers), New York, 1962.
2. Bertram, J. E., andSarachik, P. E.,On Optimal Computer Control, Automatic and Remote Control, Vol. 1, Edited by J. F. Coales, J. R. Ragazzini, and A. T. Fuller, Butterworths, London, 1961.
3. Revington, A. M., andHung, I. C.,Time-Weighted Energy Control of Discrete Data Control Systems, IEEE Transactions on Automatic Control, Vol. 11, No. 4, 1966.
4. Plant, J. B., andAthans, M.,An Iterative Technique for the Computation of Time-Optimal Controls, Paper presented at the 1966 IFAC Congress, London, England, 1966.
5. Barr, R. O., andGilbert, E. G.,Some Iterative Procedures for Computing Optimal Controls, Paper presented at the 1966 IFAC Congress, London, England, 1966.