1. On the stability of elastic equilibrium;Koiter;NASA TT F,1967
2. Elastic stability and post-buckling behavior;Koiter,1963
3. Dynamic buckling of imperfection-sensitive structures;Budiansky,1964
4. Dynamic buckling of elastic structures: criteria and estimates;Budiansky,1966
5. Nonlinear vibrations governed by partial differential equations;Keller,1966