1. Timoshenko,S.P., and Gere,J.M.: Theory of Elastic Stability, McGraw-Hill Book Co., 1961
2. Ziegler,H.: Principles of Structural Stability, Blaisdell Publ. Co., 1968
3. Britvec,S.J.: The Stability of Elastic Systems, Pergamon Press Inc., 1973
4. Brush,D.O., and Almroth,B.O.: Buckling of Bars, Plates and Shells, McGraw Hill Book Co., 1975
5. Koiter,W.T.: Current Trends in the Theory of Buckling, in Buckling of Structures, Proc. of the IUTAM Symposium, Cambridge/USA, Springer-Verlag, 1976