1. Derivation of element stiffness matrices by assumed stress distributions
2. A historical note about ‘hybrid elements’
3. and , ‘Rationalization in deriving element stiffness matrix based on assumed stress approach’, Proc. 2nd Conf. Matrix Methods in Structural Mechanics, AFFDL-TR-68-150, Wright Patterson Air Force Base, 1969, pp. 441-469.
4. ‘Finite element methods by variational principles with relaxed continuity requirement’, Int. Conf. on Variational Methods in Engineering, Southampton University, England, Session III, 1972, pp. 1-24.
5. The rectangular plane stress element by Turner, Pian and Wilson