1. AS1391 . (1991). “Methods for tensile testing of metals.” Standards Assn. of Australia Sydney Australia.
2. AS4100. (1990). “Steel structures.” Standard Assn. of Australia Sydney Australia.
3. AS4100. (1993). “Amendment No. 2 to AS4100-1990 steel structures.” Standard Assn. of Australia Sydney Australia.
4. Bleich F. (1952). The buckling strength of metal structures. McGraw-Hill Inc. New York N.Y.
5. BS5950. (1990). “Part 1: Structural use of steelwork in buildings.” British Standards Inst. London U.K.