1. Chen, W.F., 1982. Plasticity in Reinforced Concrete, McGraw-Hill, New York.
2. Chen, W.F., and A.F. Saleeb, 1982. Constitutive Equations for Engineering Materials, Volume 1: Elasticity and Modeling, Wiley-Interscience, New York.
3. Drucker, D.C., “The Relation of Experiments to Mathematical Theories of Plasticity,” Journal of Applied Mechanics 16: 349–357 (1949).
4. Hill, R., 1950. The Mathematical Theory of Plasticity, Oxford University Press, New York.
5. Pariseau, W.G., 1968. “Plasticity Theory for Anisotropic Rocks and Solids,” Proceedings of the Tenth Symposium of Rock Mechanics, Chapter 10, University of Texas, Austin.