@phdthesis{Olbrich2012,
  author      = {Roland Olbrich},
  title       = {Environmental Risk and Sustainability :: The Case of Commercial Livestock Farming in Semi-Arid Rangelands},
  type        = {doctoralthesis},
  school      = {Leuphana Universit{\"a}t L{\"u}neburg, Universit{\"a}tsbibliothek der Leuphana Universit{\"a}t L{\"u}neburg},
  year        = {2012},
}