@article{anu2012carbon,
  title = {Carbon Footprinting of Cities and Implications for Analysis of Urban Material and Energy Flows}
  author = {Anu Ramaswami, Abel Chavez, and Marian Chertow},
  journal = {Journal of Industrial Ecology},
  doi = {10.1111/j.1530-9290.2012.00569.x},
  year = {2012}
}