@article{huang2013urban,
  title = {Urban water metabolism efficiency assessment: Integrated analysis of available and virtual water}
  author = {Huang, Chu-Long; Vause, Jonathan; Ma, Hwong-Wen; Yu, Chang-Ping},
  journal = {Science of The Total Environment},
  url = {http://www.sciencedirect.com/science/article/pii/S004896971300226X},
  doi = {10.1016/j.scitotenv.2013.02.044},
  year = {2013}
}