@article{BudaeusGrueb2009,
  author    = {Dietrich Bud{\"a}us and Birgit Gr{\"u}b},
  title     = {Public Private Partnership (PPP)},
  journal   = {KWI-Schriften},
  series    = {zum aktuellen Entwicklungs- und Diskussionsstand},
  number    = {1},
  pages     = {33 -- 50},
  year      = {2009},
}