@article{van2018integrating,
  title = {Integrating Functions for a Sustainable Urban System: A Review of Multifunctional Land Use and Circular Urban Metabolism}
  author = {Van Broekhoven, Saskia; Vernay, Anne Lorène},
  journal = {Sustainability},
  url = {https://www.mdpi.com/2071-1050/10/6/1875},
  doi = {10.3390/su10061875},
  year = {2018}
}