@phdthesis{vonHeckerBeckmannSzymanski1999,
  author    = {von Hecker, Ulrich and Beckmann, J{\"u}rgen and Szymanski, Birgit},
  title     = {Interaktionen in Kleingruppen : soziale Ressourcen als Grundlage interpersonaler Macht : Interaction in small groups : social resources as a basis of interpersonal power},
  year      = {1999},
  language  = {de}
}