@inbook{winfrey2019material,
  title = {Material Cycles}
  author = {Winfrey, Brandon K.; Kangas, Patrick},
  publisher = {Factor X: Challenges, Implementation Strategies and Examples for a Sustainable Use of Natural Resources},
  url = {https://doi.org/10.1007/978-3-030-11259-2_10},
  year = {2019}
}