1. Wasiutynski, Z., andBrandt, A.,The Present State of Knowledge in the Field of Optimum Design of Structures, Applied Mechanics Reviews, Vol. 16, pp. 341?350, 1963.
2. Sheu, C. Y., andPrager, W.,Recent Developments in Optimal Structural Design, Applied Mechanics Reviews, Vol. 21, pp. 985?992, 1968.
3. Niordson, F., andPedersen, P.,A Review of Optimal Structural Design, The Danish Center for Applied Mathematics and Mechanics, Report No. 31, 1972.
4. Prager, W., andTaylor, J. E.,Problems of Optimal Structural Design, Journal of Applied Mechanics, Vol. 35, pp. 102?106, 1968.
5. Prager, W.,Optimality Criteria Derived from Classical Extremum Principles, An Introduction to Structural Optimization, Edited by M. Z. Cohn, University of Waterloo, Waterloo, Ontario, Canada, 1968.