@incollection{HuneckeHaustein2012,
  author    = {Hunecke, Marcel and Haustein, Sonja},
  title     = {Methoden der empirischen Sozialforschung zur Identifikation von Zielgruppen f{\"u}r umweltfreundliche Mobilit{\"a}tsangebote},
  series = {Mobilit{\"a}tsmanagement : wissenschaftliche Grundlagen und Wirkungen in der Praxis},
  publisher = {Klartext-Verlag},
  address   = {Essen},
  pages     = {13},
  year      = {2012},
  language  = {de}
}
@article{HausteinHunecke2013,
  author    = {Haustein, Sonja and Hunecke, Marcel},
  title     = {Identifying target groups for environmentally sustainable transport},
  series = {Current opinion in environmental sustainability},
  volume    = {5 (2013)},
  number    = {2},
  issn      = {1877-3435},
  pages     = {8},
  year      = {2013},
  language  = {en}
}