@phdthesis{Nitzsche2007,
  author      = {Thomas Nitzsche},
  title       = {Origin of magnetic anomalies in pyroclastic rocks of the Messel volcano : insights into a maar-diatreme-structure},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year        = {2007},
}