@article{OstermannHartmannHartmann2009,
  author    = {R. Ostermann and M. Hartmann and J. Hartmann},
  title     = {Angebot schließt Versorgungsl{\"u}cke},
  journal   = {Pflegezeitschrift},
  number    = {12},
  pages     = {748 -- 749},
  year      = {2009},
}