@article{duetsch,
  AUTHOR =	 {D{\"u}tsch, M. and Rehren, K.-H.},
  TITLE =	 {A comment on the dual field in the {A}d{S}-{CFT}
                  correspondence},
  JOURNAL =	 {Lett. Math. Phys.},
  FJOURNAL =	 {Letters in Mathematical Physics. A Journal for the
                  Rapid Dissemination of Short Contributions in the
                  Field of Mathematical Physics},
  VOLUME =	 {62},
  YEAR =	 {2002},
  NUMBER =	 {2},
  PAGES =	 {171--184}
}

@incollection{rehren2000b,
  AUTHOR =	 {Rehren, K.-H.},
  TITLE =	 {A proof of the {A}d{S}-{CFT} correspondence},
  BOOKTITLE =	 {Quantum theory and symmetries (Goslar, 1999)},
  PAGES =	 {278--284},
  PUBLISHER =	 {World Sci. Publishing},
  ADDRESS =	 {River Edge, NJ},
  YEAR =	 {2000}
}

@article{rehren2000a,
  AUTHOR =	 {Rehren, Karl-Henning},
  TITLE =	 {Local quantum observables in the
                  anti-de-{S}itter--conformal {QFT} correspondence},
  JOURNAL =	 {Phys. Lett. B},
  FJOURNAL =	 {Physics Letters. B},
  VOLUME =	 {493},
  YEAR =	 {2000},
  NUMBER =	 {3-4},
  PAGES =	 {383--388}
}