@proceedings{yuliya2015urban,
  title = {Urban Metabolism as Framework for Circular Economy Design for Cities}
  author = {Yuliya Kalmykova, Leonardo Rosado},
  url = {https://www.researchgate.net/publication/299563263_Urban_Metabolism_as_Framework_for_Circular_Economy_Design_for_Cities},
  year = {2015}
}