1. Stiffness and deflection analysis of complex structures;Turner;Journ. Aeron. Sci.,1956
2. Energy theorems and structural analysis;Argyris,1960
3. Introduction to finite element analysis;Martin,1973
4. Foundations of the nonlinear theory of elasticity;Novozhilov,1953
5. Theory of matrix structural analysis;Przemieniecki,1968