@article{JahnsSpielesSorgeetal.2006,
  author    = {Andr{\´e} Jahns and Christian Spieles and Heinz Sorge and Horst St{\"o}cker and Walter Greiner},
  title     = {"Antiflow" of antiprotons in heavy ion collisions},
  journal   = {Physical review letter},
  volume    = {72},
  number    = {22},
  pages     = {3464 -- 3467},
  year      = {2006},
}