1. Regular and stochastic motion;Lichtenberg,1983
2. On the equilibrium and the movements of an infinitely thin bar;Kirchhoff;Crelles Journal,1859
3. Flexible bars;Frisch-Fay,1962
4. Nonlinear dynamics and chaos;Thompson,1986
5. Theorie der Elasticität fester Körper;Clebsh,1862