1. Theory of Elastic Stability;Timoshenko,1961
2. Stability of Arches;Dinnik,1946
3. Thin-Walled Elastic Beams;Vlasov,1961
4. Variational Methods in Elasticity and Plasticity;Washizu,1974
5. Effect of curvature on stability of curved beams;Yang;J. Struct. Eng. ASCE,1987