Synchronization of Chaotic Oscillators due to Common Delay Time   Modulation
  We have found a synchronization behavior between two identical chaotic systems^M when their delay times are modulated by a common irregular signal. ^M   This phenomenon is demonstrated both in two identical chaotic maps whose delay times are driven by a common^M chaotic or random signal and in two identical chaotic oscillators whose delay times are driven by^M a signal of another chaotic oscillator. We analyze the phenomenon by using^M the Lyapunov exponents and discuss it in relation with generalized synchronization.^M 
Won-Ho Kye, Muhan Choi, M.S. Kurdoglyan, Chil-Min Kim, and Young-Jai   Park