@article{RohnLettenmeier2008,
  author    = {Rohn, Holger and Lettenmeier, Michael},
  title     = {Ansatzpunkte f{\"u}r mehr Ressourceneffizienz},
  journal   = {FactorY},
  volume    = {4},
  number    = {4},
  pages     = {17 -- 18},
  year      = {2008},
  language  = {de}
}