1. History of the strength of materials;Timoshenko,1953
2. Die Lehre der Drehungsfestigkeit;Weber;Forscharb IngWes.,1921
3. The shortening effect: a nonlinear feature of pure torsion;Cullimore;Research, Engineering Structures Supplement,1949
4. A nonlinear bending effect when certain unsymmetrical sections are subjected to a pure torque;Gregory;Australian Journal of Applied Science,1960
5. The bending and shortening effect of pure torsion;Gregory;Australian Journal of Applied Science,1960