1. American Institute of Steel Construction, Manual of Steel Construction, 7th edn, 1973.
2. and , ‘An algorithm for optimum structural design without line search’, Proc. International Symp. on Optimum Structural Design, University of Arizona, Tucson, Arizona, 19-22 October, 1981.
3. and , Nonlinear Programming, Wiley, New York, 1979.