@techreport{WittmerScharpBringezuetal.2011,
  author    = {Wittmer, Dominic and Scharp, Michael and Bringezu, Stefan and Ritthoff, Michael and Erren, Martin and Lauwigi, Christoph and Giegrich, J{\"u}rgen},
  title     = {Umweltrelevante metallische Rohstoffe : Meilensteinbericht des Arbeitsschrittes 2.1 des Projekts {"}Materialeffizienz und Ressourcenschonung{"} (MaRess) ; Teil 1, Abschlussbericht},
  series = {Ressourceneffizienz Paper},
  volume    = {2.1},
  institution = {Wuppertal Institut f{\"u}r Klima, Umwelt, Energie},
  address   = {Wuppertal},
  url       = {http://nbn-resolving.de/urn:nbn:de:bsz:wup4-opus-39704},
  pages     = {213},
  year      = {2011},
  language  = {de}
}