@article{Kimeswenger:2612,
      author        = "Kimeswenger, S. and  Zijlstra, A. A. and  van Hoof, P. A.
                       M. and  Hajduk, M. and  Lechner, M. F. M. and  van de
                       Steene, G. C. and  Gesicki, K.",
      title         = "{Symmetry and Asymmetry in "born again" Planetary
                       Nebulae}",
      year          = "2007",
}