1. ABAQUS version 4.8 theory manual . (1989a). Hibbit Karlsson and Sorensen Inc. Pawtucket R.I.
2. ABAQUS version 4.8 users' manual and example problems. (1989b). Hibbit Karlsson and Sorensen Inc. Pawtucket R.I.
3. Building code requirements for structural concrete (ACI 318-95) and Commentary (ACI 318R-95 ). (1995). Am. Concrete Inst. (ACI) Detroit Mich.
4. Design of composite steel and concrete structures-part 1-1: general rules and rules for buildings (Eurocode 4) . (1992). Euro. Committee for Standardization Brussels Belgium.