@unpublished{DrescherFarrarBleicheretal.2005,
  author  = {Hans-Joachim Drescher and Glennys R. Farrar and Marcus Bleicher and Manuel Reiter and Sven Soff and Horst St{\"o}cker},
  title   = {A fast hybrid approach to air shower simulations and applications},
  institution = {Physik},
  year    = {2005},
}