@article{Heller2009,
  author    = {Heller, Wilfried},
  title     = {Problemaufriss der Thematik und {\"U}berblick {\"u}ber die Beitr{\"a}ge dieses Bandes},
  series = {Potsdamer geographische Forschungen},
  journal   = {Potsdamer geographische Forschungen},
  number    = {28},
  issn      = {0940-9688},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-38760},
  pages     = {9 -- 20},
  year      = {2009},
  language  = {de}
}
@article{HellerBeckerBelinaetal.2007,
  author    = {Heller, Wilfried and Becker, J{\"o}rg and Belina, Bernd and Lindner, Waltraud},
  title     = {Ethnizit{\"a}t - Globalisierung - Transformation - S{\"u}dosteuropa},
  year      = {2007},
  language  = {de}
}
@article{Heller2007,
  author    = {Heller, Wilfried},
  title     = {Vorwort},
  isbn      = {978-3-939469-76-6},
  year      = {2007},
  language  = {de}
}
@misc{Heller2007,
  author    = {Heller, Wilfried},
  title     = {Wolf, J., Entwicklung der ethnischen Struktur des Banats 1890 - 1992; Berlin, Borntraeger, 1999},
  year      = {2007},
  language  = {de}
}
@article{Heller2007,
  author    = {Heller, Wilfried},
  title     = {Die demographische Lage Deutschlands : ein {\"U}berblick},
  year      = {2007},
  language  = {de}
}
@misc{Heller2007,
  author    = {Heller, Wilfried},
  title     = {Knappe, E., Transformation der Landwirtschaft in Mittel- und S{\"u}dosteuropa; Berlin, Borntr{\"a}ger, 2004},
  year      = {2007},
  language  = {de}
}
@phdthesis{Heller2006,
  author    = {Heller, Wilfried},
  title     = {Heller, W., The 'Bohemians' in New Zealand : an ethnik group?; Auckland, Univ., 2005},
  year      = {2006},
  language  = {en}
}
@article{Heller2006,
  author    = {Heller, Wilfried},
  title     = {Grenzen und Minderheiten : Einf{\"u}hrung},
  year      = {2006},
  language  = {de}
}
@article{Heller2006,
  author    = {Heller, Wilfried},
  title     = {Demographie, Migration und r{\"a}umliche Entwicklung},
  year      = {2006},
  language  = {de}
}
@misc{HellerSaupeFelgentreffetal.2006,
  author    = {Heller, Wilfried and Saupe, Gabriele and Felgentreff, Carsten and Lindner, Waltraud},
  title     = {Entrepreneurial initiative and regional development: supporting policies in the land of Brandenburg (Eastern Germany)},
  year      = {2006},
  language  = {en}
}