@phdthesis{Weikard1999,
  author      = {Hans-Peter Weikard},
  title       = {Wahlfreiheit f{\"u}r zuk{\"u}nftige Generationen : neue Grundlagen f{\"u}r eine Ressourcen{\"o}konomie},
  type        = {doctoralthesis},
  pages       = {210 S.},
  year        = {1999},
}