@misc{indiciae566351237d0a,
  title = {Behavior of xenon-133 gas after injection underground: Molecular diffusion, materials balance, and barometric effects},
  author = {J.B. Robertson},
  year = {1969},
  doi = {10.3133/ofr69226},
  url = {https://pubs.usgs.gov/publication/ofr69226},
  note = {Source identifier: ofr69226}
}