1. Derivation of element stiffness matrices by assumed stress distributions;Pian;AIAA J.,1964
2. Displacement and equilibrium models in the finite element method;Fraejis De Veubeke,1965
3. On hybrid finite element models in nonlinear solid mechanics;Atluri,1977
4. Basis of finite element methods for solid continua;Pian;Internat. J. Numer. Methods Engrg.,1969
5. Finite element formulation by variational principles with relaxed continuity requirements;Pian,1972