@article{haas2020spaceship,
  title = {Spaceship earth's odyssey to a circular economy - a century long perspective}
  author = {Haas, Willi and Krausmann, Fridolin and Wiedenhofer, Dominik and Lauk, Christian and Mayer, Andreas},
  journal = {Resources, Conservation and Recycling},
  url = {https://linkinghub.elsevier.com/retrieve/pii/S0921344920303931},
  year = {2020}
}