1. A new approach for deriving “good” element stiffness matrices;Bergan,1975
2. Finite elements based on a new procedure for computing stiffness coefficients;Hanssen,1976
3. Stiffness derivation based on element convergence requirements;Hanssen,1978
4. Experience with the patch test for convergence of finite elements;Irons,1972
5. Natural geometry of surfaces with specific reference to the matrix displacement analysis of shells;Argyris,1973