1. Fiacco, A. V., andMcCormick, G. P.,Nonlinear Programming: Sequential Unconstrained Minimization Techniques, John Wiley and Sons, New York, 1968.
2. Murray, W.,Ill-Conditioning in Barrier and Penalty Functions Arising in Constrained Nonlinear Programming, Paper Presented at the Sixth Symposium on Mathematical Programming, Princeton, New Jersey, 1967.
3. Fletcher, R., andMcCann, A. P.,Acceleration Techniques for Nonlinear Programming, Optimization, Edited by R. Fletcher, Academic Press, New York, 1969.
4. Lootsma, F. A.,Hessian Matrices of Penalty Functions for Solving Constrained Optimization Problems, Philips Research Reports, Vol. 24, 1969.
5. Murray, W.,Constrained Optimization, National Physical Laboratory, Mathematics Division, Report No. 79, 1969.