@book{AppelBraehlerDahlhausetal.2010,
  author    = {Appel, Wolfgang and Br{\"a}hler, Hermann and Dahlhaus, Ulrich and Esch, Thomas and Kopp, Stephan and Rhein, Bernd},
  title     = {Nutzfahrzeugtechnik : Grundlagen, Systeme, Komponenten. 6., {\"u}berarb. Aufl.},
  publisher = {Vieweg + Teubner},
  address   = {Wiesbaden},
  isbn      = {978-3-8348-9757-2},
  pages     = {XXVIII, 509 S. : Ill., graph. Darst.},
  year      = {2010},
  language  = {de}
}
@book{AppelBraehlerBreueretal.2013,
  author    = {Appel, Wolfgang and Br{\"a}hler, Hermann and Breuer, Stefan and Dahlhaus, Ulrich and Esch, Thomas and Hoepke, Erich and Kopp, Stephan and Rhein, Bernd},
  title     = {Nutzfahrzeugtechnik : Grundlagen, Systeme, Komponenten. 7., {\"u}berarb. u. erw. Aufl.},
  publisher = {Vieweg + Teubner},
  address   = {Wiesbaden},
  isbn      = {978-3-8348-2224-6},
  pages     = {XXXII, 620 S. : Ill., graph. Darst.},
  year      = {2013},
  language  = {de}
}