@techreport{Schoeler1999,
  type      = {Working Paper},
  author    = {Sch{\"o}ler, Klaus},
  title     = {Wohlfahrt und internationaler Handel in einem Modell der r{\"a}umlichen Preistheorie},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-13590},
  year      = {1999},
  abstract  = {Contents - Introduction - Free Trade - Optimal Tariff - Import Quota - Comparison of results},
  language  = {en}
}
@techreport{Schoeler1999,
  type      = {Working Paper},
  author    = {Sch{\"o}ler, Klaus},
  title     = {Internationaler Handel und r{\"a}umliche M{\"a}rkte},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-13567},
  year      = {1999},
  abstract  = {Contents - Introduction - Free trade in a spatial market - Tariff policy in a spatial market - Non-tariff barriers to trade in a spatial market - Conclusion},
  language  = {en}
}