1. Eurocode 3, Design of steel structures,1992
2. Some contributions to the theory of elastic and plastic stability;Bijlaard;International Association for Bridge Structural Engineering,1947
3. Stability of plates and shells beyond the proportional limit;Illyushin;NACA TM-116,1947
4. Unified theory of plastic bucling of column andn plates;Stowell;NACA Report 898,1948
5. Plastic buckling of a rectangular plate under edge thrusts;Handelmann;NACA TN-1530,1948