@misc{BorckSchrauth2019,
  author    = {Rainald Borck and Philipp Schrauth},
  title     = {Population density and urban air quality},
  booktitle = {CEPA Discussion Papers},
  number    = {8},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-42771},
  institution = {Wirtschaftswissenschaften},
  series    = {CEPA Discussion Papers},
  number    = {8},
  type      = {workingpaper},
  pages     = {53},
  year        = {2019},
}