@misc{indiciaea2aab147134f,
  title = {Statistical analysis of the radon-222 potential of rocks in Virginia, U.S.A.},
  author = {C. Erwin Brown and D.G. Mose and G.W. Mushrush and C.E. Chrosniak},
  year = {1992},
  doi = {10.1007/bf01704086},
  url = {https://pubs.usgs.gov/publication/70017170},
  note = {Source identifier: 70017170}
}