1. European Committee for Standardisation (ECS), Eurocode 4: Design of Composite Steel and Concrete Structures, Part 1-1: General rules and rules for buildings, Brussels, Belgium, 2004.
2. American Institute of Steel Construction (AISC), Specification for Steel Structural Buildings, Chicago, Il, USA, 2010.
3. Slenderness limits for filled circular steel tubes;Bradford;J. Constr. Steel Res.,2002
4. Resistance of rectangular concrete-filled tubular (CFT) sections to the axial load and combined axial compression and bending;Kwon;Thin-Walled Struct.,2014
5. J. Lee, Y. Kwon, The ultimate strength of concrete-filled steel composite columns, Proceedings, IABSE2007, Weimar, 2007, 500–501.