@article{RybskiReusserWinzetal.2016,
  author    = {Diego Rybski and Dominik Edwin Reusser and Anna-Lena Winz and Christina Fichtner and Till Sterzel and J{\"u}rgen Kropp},
  title     = {Cities as nuclei of sustainability?},
  journal   = {Environment and Planning B: Urban Analytics and City Science},
  volume    = {44},
  number    = {3},
  pages     = {425 -- 440},
  doi       = {10.1177/0265813516638340},
  year      = {2016},
}