@article{publication3466,
  title={Challenges of metal recycling and an international covenant as possible instrument of a globally extended producer responsibility},
  author={Wilts, Hennning and  Bringezu, Stefan and  Bleischwitz, Raimund and  Lucas, Rainer and  Wittmer, Dominic and  },
  journal={Waste Management & Research},
  volume={29},
  pages={902-910},
  year={2011}
}