1. Koiter, W. T.: Over de stabiliteit van het elastisch evenwicht. Thesis Delft. Amsterdam: H. J. Paris 1945. English translations published as NASA TT F-10, 833 (1967) and AFFDL Report TR 70–25 (1970).
2. Koiter, W. T.: Elastic Stability and Post-Buckling Behaviour. Proc. Symp. Nonlinear Problems, pp. 257–275. University of Wisconsin Press (1963).
3. Hutchinson, J. W.: Imperfection Sensitivity of Externally Pressurized Spherical Shells. J. Appl. Mech. 34, 49–55 (1967).
4. Koiter, W. T.: The Nonlinear Buckling Problem of a Complete Spherical Shell under Uniform External Pressure. Proc. Kon. Ned. Ak. Wet. B 72, 40–123 (1969).
5. Hutchinson, J. W.; Koiter, W. T.: Postbuckling Theory. Appl. Mech. Revs. 23, 1353–1366 (1970).