@article{keirstead2013benchmarking,
  title = {Benchmarking urban energy efficiency in the UK}
  author = {Keirstead, James},
  journal = {Energy Policy},
  url = {http://www.sciencedirect.com/science/article/pii/S0301421513008677},
  doi = {10.1016/j.enpol.2013.08.063},
  year = {2013}
}