1. Theorie statisch uberstimmter Systeme aus ideal plastischem Baustoff;Melan;Sitzber. Akad. Wiss. IIa,1936
2. A new general theorem on shakedown of elastic-plastic structures;Koiter,1956
3. Structural design applications of MP techniques;Pope;AGARD NATO No. 149,1971
4. Proc. NATO Adv. Study Inst.,1979
5. Optimum Structural Design;Kirsch,1981