1. Analysis of thick and thin shell structures by curved finite elements;Ahmad;Int. J. Num. Meth. Engng,1970
2. The Finite Element Method;Zienkiewicz,1979
3. Finite Element Procedures in Engineering Analysis;Bathe,1982
4. Concepts and Applications of Finite Element Analysis;Cook,1981
5. Incompatible displacement models;Wilson,1973