@misc{indiciaea20a2098e034,
  title = {Isotopic and trace element variability in altered and unaltered tuffs at Yucca Mountain, Nevada},
  author = {Z. E. Peterman and R.W. Spengler and F.R. Singer and R. P. Dickerson},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70018332},
  note = {Source identifier: 70018332}
}