@techreport{itb3271,
  author = {Zimmermann, T.},
  title = {Dynamic material flow analysis of critical metals embodied in thin-film photovoltaic cells},
  year = {2013},
  series = {artec-papers},
  number = {194},
  publisher = {Universität Bremen},
  address = {Bremen},
  url = {https://media.suub.uni-bremen.de/handle/elib/3016},
  language = {en},
}