@article{chen2016urban,
  title = {Urban energy–water nexus: A network perspective}
  author = {Chen, Shaoqing; Chen, Bin},
  journal = {Applied Energy},
  url = {http://www.sciencedirect.com/science/article/pii/S0306261916303592},
  doi = {10.1016/j.apenergy.2016.03.042},
  year = {2016}
}