Features of pulsed synchronization of a systems with a tree-dimensional   phase space
  Features of synchronization picture in the system with the limit cycle embedded in a three-dimensional phase space are considered. By the example of Ressler system and Dmitriev - Kislov generator under the action of a periodic sequence of delta - function it is shown, that synchronization picture significantly depends on the direction of pulse action. Features of synchronization tons appeared in these models are observed. 
A. P. Kuznetsov, N. V. Stankevich and L. V. Turukina