@misc{indiciaefeb2a322a4e1,
  title = {Variance design and air pollution control.},
  author = {T A Ferrar and A B Brownstein},
  year = {1975},
  doi = {10.1080/00022470.1975.10470114},
  url = {https://pubmed.ncbi.nlm.nih.gov/1141540/},
  note = {Source identifier: 1141540}
}