@article{KnightPriceBowleretal.2016,
  author    = {Teri Knight and Sian Price and Diana Bowler and Sian King},
  title     = {How effective is 'greening' of urban areas in reducing human exposure to ground-level ozone concentrations, UV exposure and the 'urban heat island effect'? A protocol to update a systematic review},
  journal   = {Environmental Evidence},
  pages     = {1 -- 6},
  doi       = {10.1186/s13750-016-0054-y},
  year      = {2016},
}