@misc{indiciae25a27b1c5d4c,
  title = {Comparison of the isotopic abundance of U235 and U238 and the radium activity ratios in Colorado Plateau uranium ores},
  author = {F. E. Senftle and L. Stieff and F. Cuttitta and P.K. Kuroda},
  year = {1957},
  doi = {10.1016/0016-7037(57)90081-9},
  url = {https://pubs.usgs.gov/publication/70010797},
  note = {Source identifier: 70010797}
}