@article{FeudelWittGellertetal.2005,
  author    = {Fred Feudel and Annette Witt and Marcus Gellert and J{\"u}rgen Kurths and Celso Grebogi and Miguel Angel Fernandez Sanjuan},
  title     = {Intersections of stable and unstable manifolds : the skeleton of Lagrangian chaos},
  year      = {2005},
}