@article{SchusterUhlendorffSchmidtetal.2000,
  author    = {Schuster, Beate H. and Uhlendorff, Harald and Schmidt, Brita and Traub, Angelika},
  title     = {Bedingungen mitb{\"u}rgerlichen Engagements : Interaktionserfahrungen in der Familie und Verantwortungs{\"u}bernahme durch Heranwachsende},
  isbn      = {3-8100-2913-0},
  year      = {2000},
  language  = {de}
}
@article{Uhlendorff2000,
  author    = {Uhlendorff, Harald},
  title     = {Parentin in times of social transformation},
  isbn      = {0-7146-8134-2, 0-7146-5093-5},
  year      = {2000},
  language  = {en}
}
@article{Uhlendorff2000,
  author    = {Uhlendorff, Harald},
  title     = {Parents' and children's friendship networks},
  issn      = {0192-513X},
  year      = {2000},
  language  = {en}
}