1. Shilkrut, D.: Solutions of some stability problems in the theory of geometrically non-linear shells. Israel J. Techn. 18 (1980) 76?83
2. Stumpf, H.: On the linear and nonlinear stability analysis in the theory of thin elastic shells. Ing. Arch. 51 (1981) 195?213
3. Krätzig, W. B.; Basar, Y.; Wittek, U.: Nonlinear behaviour and elastic stability of shells. Buckling of Shells, Proc. of a state-of-the-Art Colloquium. Berlin, Heidelberg, New York: Springer 1982
4. Stein, E.; Berg, A.; Wagner, W.: Different levels of non-linear shell theory in finite element stability analysis. Buckling of Shells, Proc. of a state-of-the-Art Colloquium. Berlin, Heidelberg, New York: Springer 1982
5. KIB-TWM 82-10;B. Harte,1982