1. Stress and Strain in Plastic Flow;Roop;Welding Journal,1946
2. A Reconsideration of Deformation Theories of Plasticity;Drucker;Paper No. 48-A-81 presented to the ASME,1948
3. The Plasticity of Metals. A Discussion of Mathematical Theory and its Application to Civil Engineering Problems;Drucker,1949
4. Bending of an Ideal Plastic Metal;Sachs,1948
5. Graphical Methods of Representing Some Conditions of Plasticity;Baldwin;AIMME, TP 1980, Metals Technology,1946