@misc{indiciaee171af20e6e0,
  title = {Modelling urban air pollution.},
  author = {F A Gifford and S R Hanna},
  year = {1973},
  doi = {10.1016/0004-6981(73)90202-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4685064/},
  note = {Source identifier: 4685064}
}