1. Eurocode 4: design of composite steel and concrete structures, part 1–1, general rules and rules for buildings,2004
2. Specification for structural steel buildings;ANSI/AISC 360–05,2005
3. Seismic provisions for structural steel buildings;ANSI/AISC 341–05,2005
4. Ultimate moment of reinforced concrete short columns confined in steel tube;Tomii,1987
5. Effects of wall thickness of steel tube on the behavior of square tubed R/C columns;Sakino,1996