@article{sovacool2010twelve, title = {Twelve metropolitan carbon footprints: A preliminary comparative global assessment} author = {Sovacool, Benjamin K.; Brown, Marilyn A.}, journal = {Energy Policy}, url = {http://www.sciencedirect.com/science/article/pii/S0301421509007277}, doi = {10.1016/j.enpol.2009.10.001}, year = {2010} }