@article{villarroel2014the,
  title = {The energy-water-food nexus: Strategic analysis of technologies for transforming the urban metabolism}
  author = {Villarroel Walker, R.; Beck, M. B.; Hall, J. W.; Dawson, R. J.; Heidrich, O.},
  journal = {Journal of Environmental Management},
  url = {http://www.sciencedirect.com/science/article/pii/S0301479714001704},
  doi = {10.1016/j.jenvman.2014.01.054},
  year = {2014}
}