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2. American Iron and Steel Institute. 1996 Edition of the Specification for the Design of Cold-Formed Steel Structural Members. Washington, DC, USA, 1997.
3. Canadian Standards Association, S136. Cold Formed Steel Structural Members. Etobicoke, Ont., Canada, 1994.
4. Steel ductility measurements;Dhalla;Journal of the Structural Division, ASCE,1974
5. Suggested steel ductility requirements;Dhalla;Journal of the Structural Division, ASCE,1974