@book{Sporket2011,
  author    = {Sporket, M.},
  title     = {Organisationen im demographischen Wandel. Alternsmanagement in der betrieblichen Praxis},
  publisher = {Verlag f{\"u}r Sozialwissenschaften},
  address   = {Wiesbaden},
  isbn      = {3531177370},
  year      = {2011},
  language  = {de}
}
@book{KatenkampMartensGeorgetal.2011,
  author    = {Katenkamp, O. and Martens, H. and Georg, A. and Naegele, G. and Sporket, M.},
  title     = {Nicht zum alten Eisen! Die Praxis des Demographie-Tarifvertrages in der Eisen- und Stahlindustrie},
  publisher = {Edition Sigma},
  address   = {Berlin},
  isbn      = {3836087383},
  year      = {2011},
  language  = {de}
}