@article{zou2019urban,
  title = {Urban Metabolism and the UM-US-SC Nexus}
  author = {Zou, Tong},
  journal = {Factor X: Challenges, Implementation Strategies and Examples for a Sustainable Use of Natural Resources},
  url = {http://journal.julypress.com/index.php/ajsss/article/view/671},
  doi = {10.20849/ajsss.v4i4.671},
  year = {2019}
}