1. Fluidity and Plasticity;Bingham,1922
2. Ueber die Anasaetze der Mechanik isotroper Kontinua;Hohenemser;Z.f. angew., Math. u. Mech.,1932
3. Soil Mechanics and Plastic Analysis or Limit Design;Drucker;Quart. Appl. Mech.,1952
4. A Definition of Stable Inelastic Material;Drucker;J. Appl. Mech.,1959
5. Fundamental Problems in Viscoplasticity;Perzyna,1966