1. Theory of elastic stability;Timoshenko,1961
2. Biegedrillknicken, Kippen;Kollbrunner,1961
3. Stability of elastic system;Volmir,1963
4. Bending, torsion and stability of thin-walled open-section members;Chen,1965
5. Torsional-flexural buckling of thin-walled sections under eccentric load;Pekoz;J Struct Div, P.ASCE,1969