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3. CEN. Eurocode 3: Design of steel structures. Part 1.3: General rules. European Prestandard ENV 1993-1-3. 1996.
4. Australian Standards/New Zealand Standards. Cold-formed steel structures. AS/NZS 4600:1996. Sydney. 1994.
5. Canadian Standards Association. Cold formed steel structural members. S136-94. Toronto: CSA, 1994.