@misc{indiciae6169a83eda33,
  title = {An analytical model for in situ extraction of organic vapors},
  author = {William R. Roy and R. A. Griffin},
  year = {1991},
  doi = {10.1016/0304-3894(91)85026-j},
  url = {https://pubs.usgs.gov/publication/70016818},
  note = {Source identifier: 70016818}
}