@misc{indiciae51261d37ab81,
  title = {Chemical analyses, correlations, and ages of late Cenozoic tephra units of east-central and Southern California},
  author = {Andrei M. Sarna-Wojcicki and H.W. Bowman and C.E. Meyer and P.C. Russell and Frank Asaro and Helen Michael and J.J. Rowe and P. A. Baedecker and G.A. McCoy},
  year = {1980},
  doi = {10.3133/ofr80231},
  url = {https://pubs.usgs.gov/publication/ofr80231},
  note = {Source identifier: ofr80231}
}