1. History of Strength of Materials;Timoshenko,1953
2. Park R, Paulay T. Reinforced Concrete Structures. John Wiley & Sons, New York, 1975.
3. The theory of complementary energy;Qian;Science China,1950
4. Towards a consistent design of structural concrete;Schlaich;J. Prestressed Concrete Institute,1987
5. Theory of Elasticity;Timoshenko,1951