@misc{indiciae0a2fe09b1731,
  title = {Diffusion of radon through concrete block walls: A significant source of indoor radon},
  author = {R.S. Lively and L.F. Goldberg},
  year = {1999},
  doi = {10.1093/oxfordjournals.rpd.a032604},
  url = {https://pubs.usgs.gov/publication/70021760},
  note = {Source identifier: 70021760}
}