@article{webb2017sustainable,
  title = {Sustainable urban systems: Co-design and framing for transformation}
  author = {Webb, Robert and Bai, Xuemei and Smith, Mark Stafford and Costanza, Robert and Griggs, David and Moglia, Magnus and Neuman, Michael and Newman, Peter and Newton, Peter and Norman, Barbara and Ryan, Chris and Schandl, Heinz and Steffen, Will and Tapper, Nigel and Thomson, Giles},
  journal = {Ambio: A Journal of the Human Environment},
  doi = {10.1007/s13280-017-0934-6},
  year = {2017}
}