1. Hestenes, M. R.,Multiplier and Gradient Methods, Journal of Optimization Theory and Applications, Vol. 4, No. 5, 1969.
2. Kelley, H. J.,Methods of Gradients, Optimization Techniques, Edited by G. Leitmann, Academic Press, New York.
3. Bryson, A. E., Jr., andHo, Y. C.,Applied Optimal Control, Blaisdell Publishing Company, Waltham, Massachusetts, 1969.
4. Fiacco, A. V., andMcCormick, G. P.,Nonlinear Programming: Sequential Unconstrained Minimization Techniques, John Wiley and Sons, New York, 1968.
5. Davies, D., andSwann, W. H.,Review of Constrained Optimization, Optimization, Edited by R. Fletcher, Academic Press, New York, 1969.