1. Plastic analysis of structures;Hodge,1959
2. Theory of Perfectly Plastic Solids;Prager,1951
3. A minimax problem in plasticity;Strang,1979
4. Problm̀es Mathématiques en Plasticité;Teman,1983
5. Linear programming and plastic limit analysis of structures;Dorn;Quart. Appl. Math.,1957