1. Die Knickfestigkeit Gerader Stabe (in German);Engesser;Zentralbl Bauverwaltung,1891
2. Buckling strength of metal structures;Bleich,1952
3. Theory of elastic stability;Timoshenko,1961
4. Behavior of laced and battened structural members;Lin;J Struct Div (ASCE),1970
5. Spaced steel column;Johnston;J Struct Div (ASCE),1971