@book{Vieth2008,
  author    = {Vieth, Matthias},
  title     = {Geld-zur{\"u}ck-Garantien: Eine empirische Wirkungsanalyse aus Konsumentensicht.},
  publisher = {Springer Gabler},
  address   = {Wiesbaden},
  isbn      = {978-3-8349-1408-8},
  pages     = {217 Seiten},
  year      = {2008},
  language  = {de}
}
@book{Ferrein2008,
  author    = {Ferrein, Alexander},
  title     = {Robot controllers for highly dynamic environments with real-time constraints},
  pages     = {XVI; 247 S. : Ill., graph. Darst},
  year      = {2008},
  language  = {en}
}