@article{PiontkowskiOehlschlegelHoelker1997,
  author    = {Piontkowski, Ursula and {\"O}hlschlegel, Sonja and H{\"o}lker, Paul},
  title     = {Ann{\"a}herung oder Abgrenzung? Ergebnisse einer L{\"a}ngsschnittstudie zur Wirksamkeit der Ost-West Kategorie},
  series = {Zeitschrift f{\"u}r Soziologie},
  volume    = {26},
  journal   = {Zeitschrift f{\"u}r Soziologie},
  number    = {2},
  issn      = {0340-1804},
  pages     = {128 -- 138},
  year      = {1997},
  language  = {de}
}
@article{OehlschlegelPiontkowski1997,
  author    = {{\"O}hlschlegel, Sonja and Piontkowski, Ursula},
  title     = {Topic progression and social categorization. Violations of neutral and local coherence as a mean for achieving positive social distinctiveness in face-to-face intergroup communication},
  series = {Journal of Language and Social Psychology},
  volume    = {Vol. 16},
  journal   = {Journal of Language and Social Psychology},
  number    = {No. 4},
  issn      = {0261-927X},
  pages     = {444 -- 455},
  year      = {1997},
  language  = {en}
}
@incollection{PiontkowskiOehlschlegel1997,
  author    = {Piontkowski, Ursula and {\"O}hlschlegel, Sonja},
  title     = {Wenn Ost- und Westdeutsche miteinander sprechen},
  series = {Deutsch-Deutsche Sprachspiele},
  booktitle = {Deutsch-Deutsche Sprachspiele},
  editor    = {Frindte, and Fahrig, and K{\"o}hler,},
  publisher = {LIT Verlag},
  address   = {M{\"u}nster},
  isbn      = {3-8258-3430-1},
  publisher      = {FH M{\"u}nster - University of Applied Sciences},
  pages     = {25 -- 42},
  year      = {1997},
  language  = {de}
}