1. Observations of order and chaos in nonlinear systems;Swinney;Physica 7D,1983
2. Meeting report: testing nonlinear dynamics;Abraham;Physica 11D,1984
3. Universal behavior in nonlinear systems;Feigenbaum;Physica,1983
4. Steady motions exhibited by Duffing's equation;Ueda,1980
5. Chaotic states of anharmonic systems in periodic fields;Huberman;Phys. Rev. Lett.,1979