1. ABAQUS/standard user's manual (version 5.4) . (1994). Hibbitt and Karlsson and Sorensen Inc. Pawtucket R.I.
2. Object‐Oriented Finite Element and Graphics Data‐Translation Facility
3. Bass L. and Coutaz J. (1991). Developing software for the user interface . Addison-Wesley Publishing Co. Inc. Reading Mass.
4. Bell K. Hatlestad B. and Hansteen D. E. (1973). “NORSAM: a programming system for the finite element method.” Tech. Rep. Norwegian Inst. of Technol. Trondheim Norway.
5. Booch G. (1994). Object oriented analysis and design . Benjamin/Cummings Publishing Co. Inc. RedWood City Calif.