1. Approximate finite element method of stress analysis of non-axisymmetric configuration;Zak;Comput. Structures,1978
2. The Finite Element Method in Engineering Science;Zienkiewicz,1971
3. Theory of Matrix Structural Analysis;Przemieniecki,1968
4. Finite element computer program for the analysis of layered, orthotropic structures;Zak;BRL Contract Rep. No. 158,1974
5. Numerical analysis of laminated orthotropic composite structure;Zak;BRL Contract Rep. No. 272,1975