@incollection{Hansbauer2009,
  author    = {Hansbauer, Peter},
  title     = {A short introduction to the German system of child and youth welfare},
  series = {Emmanuel Grupper, Josef Koch, Friedhelm Peters (eds.): Challenges for child and youth care: a German-Israeli dialogue},
  booktitle = {Emmanuel Grupper, Josef Koch, Friedhelm Peters (eds.): Challenges for child and youth care: a German-Israeli dialogue},
  publisher = {IGfH},
  address   = {Frankfurt/M.},
  isbn      = {978-3-925146-},
  pages     = {59 -- 72},
  year      = {2009},
  language  = {en}
}
@incollection{LinssenMarks2009,
  author    = {Linssen, R. and Marks, E.},
  title     = {School shootings - Considerations on prevention subject to relative ignorance of the phenomenon},
  series = {Coester, M. \& Marks, E. (Hrsg.), International Perspectives of Crime Prevention 2. Contributions from the 2nd Annual International Forum 2008},
  booktitle = {Coester, M. \& Marks, E. (Hrsg.), International Perspectives of Crime Prevention 2. Contributions from the 2nd Annual International Forum 2008},
  edition   = {1.Aufl},
  publisher = {Forum Verlag Godesberg},
  address   = {M{\"o}nchengladbach},
  isbn      = {978-3-936999-},
  pages     = {89 -- 98},
  year      = {2009},
  language  = {en}
}