@article{nakagawa_1938, 
  title={Principal Shearing Stress Theory and New Theory of Plasticity}, 
  volume={41}, 
  DOI={10.1299/jsmemag.41.261_1012}, 
  number={261}, 
  publisher={Japan Society of Mechanical Engineers}, 
  author={NAKAGAWA}, 
  year={1938}
  }