@phdthesis{Wijnen2002,
  author      = {Jeroen Johan Andreas Wijnen},
  title       = {A groundwater flow and particle tracking model of the Ira{\´i}-basin, Paran{\´a}, Brazil},
  type        = {doctoralthesis},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year        = {2002},
}