@incollection{itb2371,
  author = {Sebe-Opfermann, Andreas and Gessler, Michael},
  editor = {M. Gessler},
  title = {Lebenslanges Lernen},
  year = {2009},
  booktitle = {Handlungsfelder des Bildungs­managements: Ein Handbuch},
  pages = {91–122},
  publisher = {Waxmann},
}