1. The Plastic Methods of Structural Analysis;Neal,1977
2. Engineering plasticity by mathematical programming;Cohn,1977
3. Sur la theorie et le calcul a l'adaption des structures elastoplastiques;Debordes;J. de Mecanique,1976
4. Linear programming and plastic limit analysis;Dorn;Quart. Appl. Math.,1957
5. A general phenomenology of hysteresis;Erber;Ann. Phys,1972