@book{Kauffmann2008,
  author    = {Kauffmann, Albrecht},
  title     = {Im Zentrum Europas : die Metropolenregion Berlin in der erweiterten Europ{\"a}ischen Union},
  series = {Volkswirtschaftliche Diskussionsbeitr{\"a}ge},
  volume    = {96},
  journal   = {Volkswirtschaftliche Diskussionsbeitr{\"a}ge},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {30 S.},
  year      = {2008},
  language  = {de}
}
@techreport{Kauffmann2008,
  type      = {Working Paper},
  author    = {Kauffmann, Albrecht},
  title     = {Im Zentrum Europas},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-27381},
  year      = {2008},
  abstract  = {European integration provokes competition between the European metropolitan areas. At the same time, the question at which locations services of highest centrality are produced remains open. The paper analyses how far the German capital Berlin accepts the challenge to accomodate headquarters of multinational firms. Our investigation shows that Berlin's qualifications to attract headquarters are quite well. The number of headquarters residing in Berlin has increased subtly but contiuous during the last 15 years. One advantage could be the spatial proximity to the Eastern European markets.},
  language  = {de}
}