@inbook{costa2004developing,
  title = {Developing The Urban Metabolism Approach Into A New Urban Metabolic Model}
  author = {Costa, A and Marchettini, N and Facchini, A},
  url = {https://www.witpress.com/elibrary/wit-transactions-on-ecology-and-the-environment/72/12299},
  doi = {10.2495/SC040041},
  year = {2004}
}