1. Variational Methods of Mathematical Physics;Mikhlin,1963
2. Triangular elements in plate bending. Conforming and nonconforming solutions;Bazeley,1965
3. A convergence investigation of the direct stiffness method;Key,1966
4. Introdução á teoria das estruturas;Oliveira,1966
5. Inadequacy of nodal connections in a stiffness solution for plate bending;Irons;AIAA Jnl,1963