@article{OswaldKrappmannUhlendorffetal.1994,
  author    = {Oswald, Hans and Krappmann, Lothar and Uhlendorff, Harald and Weiss, Karin},
  title     = {Social relationships and support among peers during middle childhood},
  year      = {1994},
  language  = {en}
}
@book{Uhlendorff1995,
  author    = {Uhlendorff, Harald},
  title     = {Soziale Integration in den Freundeskreis},
  series = {Materialien aus der Bildungsforschung},
  volume    = {52},
  journal   = {Materialien aus der Bildungsforschung},
  publisher = {Max-Planck-Inst. f{\"u}r Bildungsforschung},
  address   = {Berlin},
  isbn      = {3-87985-044-5},
  pages     = {130 S.},
  year      = {1995},
  language  = {de}
}
@article{WeissUhlendorff1995,
  author    = {Weiss, Karin and Uhlendorff, Harald},
  title     = {Sozialer Wandel : Ver{\"a}nderung der familialen Lebensverh{\"a}ltnisse und die soziale Situation von Kindern},
  isbn      = {3-432-26581-6},
  year      = {1995},
  language  = {de}
}
@article{Uhlendorff1996,
  author    = {Uhlendorff, Harald},
  title     = {Familie in Ost- und West-Berlin : Einfl{\"u}sse der Großeltern auf die Enkel und die Erziehungseinstellungen der Eltern},
  isbn      = {3-931147-29-0},
  year      = {1996},
  language  = {de}
}
@article{Uhlendorff1996,
  author    = {Uhlendorff, Harald},
  title     = {Elterliche soziale Netzwerke in ihrer Wirkung auf die Freundschaftsbeziehungen der Kinder},
  year      = {1996},
  language  = {de}
}
@article{UhlendorffKrappmannOswald1997,
  author    = {Uhlendorff, Harald and Krappmann, Lothar and Oswald, Hans},
  title     = {Familie in Ost- und West-Berlin : Erziehungseinstellungen und Kinderfreundschaften},
  year      = {1997},
  language  = {de}
}
@article{Uhlendorff1997,
  author    = {Uhlendorff, Harald},
  title     = {Eltern- und Kinderfreundschaften in Ost- und Westberlin},
  year      = {1997},
  language  = {de}
}
@article{UhlendorffKrappmann1999,
  author    = {Uhlendorff, Harald and Krappmann, Lothar},
  title     = {Kinderfreundschaften und Freundschaftskonzept},
  issn      = {1435-4594},
  year      = {1999},
  language  = {de}
}
@article{KrappmannUhlendorff1999,
  author    = {Krappmann, Lothar and Uhlendorff, Harald},
  title     = {Soziometrische Akzeptanz in der Schulklasse und Kinderfreundschaften},
  isbn      = {3-89271-865-2},
  year      = {1999},
  language  = {de}
}
@article{KrappmannUhlendorffOswald1999,
  author    = {Krappmann, Lothar and Uhlendorff, Harald and Oswald, Hans},
  title     = {Qualities of Children{\"i}s Friendships in Middle Childhood in East- and West Berlin},
  isbn      = {3-11-016500-7},
  year      = {1999},
  language  = {en}
}