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2. AS1358-1988; cold-formed steel structures . (1988). Standards Assn. of Australia Sydney Australia.
3. AS4100-1990; steel structures . (1990). Standards Assn. of Australia Sydney Australia.
4. BHP hot rolled and structural steel products. (1994). BHP Steel Melbourne Australia.
5. Bleich F. (1952). Buckling strength of metal structures. McGraw-Hill Book Co. Inc. New York N.Y.