1. A flat triangular shell element stiffness matrix;Melosh,1965
2. The analysis of thin shells with transverse shear strains by the finite element method;Key,1965
3. Stiffness matrices for thin triangular elements of nonzero Gauss curvature;Utku,1966
4. Stiffness matrices for thin triangular elements of nonzero Gaussian curvature;Utku;AIAA J.,1967
5. Behaviour of triangular shell element stiffness matrices associated with polyhedral deflection distribution;Utku,1967