@misc{indiciaea0c5daf77503,
  title = {A calibration pad facility for gamma-ray spectrometers at the U.S. Geological Survey in Reston, Virginia},
  author = {Joseph S. Duval1 and Stephen L. Snyder},
  year = {2005},
  doi = {10.3133/ofr20051435},
  url = {https://pubs.usgs.gov/publication/ofr20051435},
  note = {Source identifier: ofr20051435}
}