@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}
}
@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}
}