@misc{indiciaeb721e51bf1d9,
  title = {Satellite-aided evaluation of population exposure to air pollution},
  author = {William J. Todd and Anthony J. George and Nevin A. Bryant},
  year = {2002},
  doi = {10.1021/es60156a014},
  url = {https://pubs.usgs.gov/publication/70112367},
  note = {Source identifier: 70112367}
}