@unpublished{HossenfelderBleicherHofmannetal.2005,
  author  = {Sabine Hossenfelder and Marcus Bleicher and Stefan Hofmann and J{\"o}rg Ruppert and Stefan Scherer and Horst St{\"o}cker},
  title   = {Signatures in the Planck regime},
  institution = {Physik},
  year    = {2005},
}