1. EN 10210-1. Hot-finished structural hollow sections of non-alloy and fine grain steels, European Standard, CEN, 2006.
2. Hot vs. cold formed hollow sections;Whitfield;The Structural Engineer,2007
3. EN 10219-2. Cold-formed welded structural hollow sections of non-alloy and fine grain steels, European Standard, CEN, 2006.
4. Cold-formed tubular members and connections;Zhao,2005
5. Madugula MKS, Haidur R, Monforton GR and Marshall DG. Additional residual stress and yield stress tests on hot-rolled angles. Proceedings of the Structural Stability Research Council Annual Technical Session. June 1997, Toronto, Canada. pp. 55–68. 1997.