1. Specification for the design of cold-formed steel structural members, 2004 edition (Printed 1 Jan 2005);AISI,2004
2. Standards Association of Australia 2005. AS/NZS 4600:2005. Cold-Formed Steel Structures Standards Australia/ Standards New Zealand
3. Analytical results for post-buckling behaviour of plates in compression and in shear;Stein,1985
4. Theory of elastic stability;Timoshenko,1961
5. Stability of flat plates W.C.2;Bulson,1970