@article{ramana2018benchmarking,
  title = {Benchmarking urban eco-efficiency and urbanites' perception}
  author = {Ramana Gudipudia, Matthias K.B. Lüdeke, Diego Rybski, Jürgen P. Kropp},
  journal = {Cities},
  doi = {10.1016/j.cities.2017.11.009},
  year = {2018}
}