1. A survey of optimal structural design under dynamic constraints;Pierson;International Journal of Numerical methods in Engineering,1972
2. A review of optimal structural design;Niordson,1973
3. A survey of optimal design of vibrating structural elements;Olhoff;Shock and Vibration Digest,1976
4. Thin-walled Elastic Beams;Vlasov,1959
5. Variational Methods in Elasticity and Plasticity;Washizu,1974