@article{ranft2009-19733348,
  author  = {Ranft, U. and Schikowski, T. and Sugiri, D. and Krutmann, J. and Krämer, U.},
  title   = {{Long-term exposure to traffic-related particulate matter impairs cognitive function in the elderly}},
  journal = {Environmental research},
  year    = {2009},
  doi     = {10.1016/j.envres.2009.08.003},
  pmid    = {19733348},
  url     = {https://doi.org/10.1016/j.envres.2009.08.003}
}