@incollection{HorsterPueschel2009,
  author    = {Bettina Horster and Steffen P{\"u}schel},
  title     = {Mobile Business Outlook 2008-2010},
  series = {Innovative mobile Technologien und Anwendungen},
  publisher = {Lit},
  address   = {Berlin},
  year      = {2009},
  language  = {de}
}