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