@misc{indiciae900883222fc7,
  title = {Theoretical effect of diffusion on isotopic abundance ratios in rocks and associated fluids},
  author = {F. E. Senftle and J. T. Bracken},
  year = {1955},
  doi = {10.1016/0016-7037(55)90046-6},
  url = {https://pubs.usgs.gov/publication/70010749},
  note = {Source identifier: 70010749}
}