@misc{indiciae83424a413e36, title = {Theoretical effect of diffusion on isotopic abundance ratios in rocks and associated fluids}, author = {F. E. Senftle and J. T. Bracken}, year = {1954}, doi = {10.3133/tei418}, url = {https://pubs.usgs.gov/publication/tei418}, note = {Source identifier: tei418} }