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2. A refined quadrilateral element for analysis of plate bending;Clough;Proceedings of the Second Conference Matrix Methods in Structural Mechanics,1968
3. Finite element stiffness matrices for analysis of plate bending;Clough;Proceedings of the First Conference Matrix Methods in Structural Mechanics,1966
4. The generation of interelement-compatible stiffness and mass matrices by the use of interpolation formulae;Bogner;Proceedings of the First Conference Matrix Methods in Structural Mechanics,1966