@article{LeggenLeggen1995,
  author    = {Leggen, Brigitte and Leggen, Dirk},
  title     = {Ver{\"o}ffentlichungskarten},
  year      = {1995},
  language  = {de}
}
@book{LeggenLeggen1996,
  author    = {Leggen, Brigitte and Leggen, Dirk},
  title     = {Teritorios Ind{\´i}genas y Grandes Proyectos Colombia : {\"U}bersichtskarte},
  address   = {Potsdam},
  year      = {1996},
  language  = {de}
}
@article{LeggenLeggen1996,
  author    = {Leggen, Brigitte and Leggen, Dirk},
  title     = {Kartenwerk Indianerterritorien : eine Anwendung des Desktop Mapping zur Modellierung und Produktion mehr schichtig-komplexer Themakarten},
  year      = {1996},
  language  = {de}
}