@book{Gerhardt1994,
  author    = {Gerhardt, Hans Joachim},
  title     = {Absaugung von großfl{\"a}chig austretenden Schadstoffen beim offenen Guttransport},
  address   = {Frankfurt/M},
  year      = {1994},
  language  = {de}
}
@book{Wahle1994,
  author    = {Wahle, Michael},
  title     = {Kinetik. - (Dynamik ; 2)},
  edition   = {1. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3- 930085-94-1},
  pages     = {91 S. : graph. Darst.},
  year      = {1994},
  language  = {de}
}