1. AISC-ASD. Allowable stress design specification for structural steel buildings; 1989.
2. AISC-LRFD. Load and resistance factor design specifications for structural steel buildings; 2005.
3. CSA S16-01. Limit state design of steel structures. Toronto, Canadian Standards Association; 2001.
4. Die Knickfestigkeit Gerader Stabe;Engesser;Z. Bauverwaltung,1891
5. Buckling strength of metal structures;Bleich,1952