@misc{indiciae298bca99a7a9,
  title = {Half-life of Th232 and the branching ratio of Bi212},
  author = {F. E. Senftle and T. A. Farley and N. Lazar},
  year = {1956},
  doi = {10.1103/physrev.104.1629},
  url = {https://pubs.usgs.gov/publication/70010475},
  note = {Source identifier: 70010475}
}