@article{mayer2019measuring,
  title = {Measuring Progress towards a Circular Economy: A Monitoring Framework for Economy‐wide Material Loop Closing in the EU28}
  author = {Mayer, Andreas and Haas, Willi and Wiedenhofer, Dominik and Krausmann, Fridolin and Nuss, Philip and Blengini, Gian Andrea},
  journal = {Journal of Industrial Ecology},
  url = {https://onlinelibrary.wiley.com/doi/10.1111/jiec.12809},
  year = {2019}
}