1. American Iron and Steel Institute. 1996 edition of the specification for the design of cold-formed steel structural members. Washington, DC, USA, 1997.
2. Standards Australia/Standards New Zealand. Cold-formed steel structures — AS/NZS 4600, Sydney, NSW, Australia, 1996.
3. Canadian Standards Association, S136. Cold formed steel structural members. Etobicoke, Ont, Canada, 1994.
4. Steel ductility measurements;Dhalla;J. Struct. Div., ASCE,1974
5. Suggested steel ductility requirements;Dhalla;J. Struct. Div., ASCE,1974