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2. British Standards Institution. Addendum no. 1 to BS 449:1959. Specification for the use of cold formed steel sections in building; 1961.
3. Cold formed sections in structural practice with a proposed design specification;Shearer-Smith;Struct Eng,1951
4. British Standards Institution. BS 5950: part 5: code of practice for the design of cold formed steel member; 1987.
5. ECCS-TWG7/1. European recommendations for the design of light gauge steel members; 1987.