1. Theory of Elastic Stability;Timoshenko,1961
2. Stability of Deformable Systems;Volmir,1967
3. Buckling Loads for Stepped Columns
4. Some Non-Conventional Cases of Column Design;Dalal;AISC Eng. J.,1969
5. Calculation of Effective Lengths and Effective Slenderness Ratios of Stepped Columns;Anderson;Eng. J. Am. Inst. Steel Constr.,1972