@inbook{athanassiadis2019opportunities,
  title = {Opportunities and limits of circular economy as policy framework for urban metabolism}
  author = {Athanassiadis, Aristide; Kampelmann, Stephan;},
  publisher = {Factor X: Challenges, Implementation Strategies and Examples for a Sustainable Use of Natural Resources},
  url = {https://difusion.ulb.ac.be/vufind/Record/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/282802/Details},
  year = {2019}
}