Periodicity of chaotic solutions
  The scope of the paper is the analysis of the impact of flow reversal on the dynamics of cascades of reactors. Periodic and chaotic oscillations occur in the analyzed system. There is a dependence between the oscillation period of the state variable of the system without flow reversal and the recurrence period of windows of chaos in the steady-state diagram of the system with flow reversal. 
Marek Berezowski, Bozena Kulik
nlin.CD physics.chem-ph