1. Code of Practice for General Construction in Steel, IS 800, Bureau of Indian Standards, Table 5.1, Clause 5.1.1, 39 (1984)
2. Code of Practice for General Construction in Steel, IS 800, Bureau of Indian Standards, Table 5.2, Clause 5.2.2, 41 (1984)
3. Web site: http://www.engineersedge.com/column_buckling/column_ideal.htm
4. Web site: http:/ www.tech.plymouth.ac.uk
5. Holman, J.P.: Force, Torque and Strain Measurements, Chap. 10. In: Experimental Methods for Engineers, McGraw-Hill, New York (2001)