@misc{indiciaea1a85aaf9a04,
  title = {The Hayes tephra deposits, and upper Holocene marker horizon in south-central Alaska},
  author = {J.R. Riehle and P.M. Bowers and T. A. Ager},
  year = {2017},
  doi = {10.1016/0033-5894(90)90056-q},
  url = {https://pubs.usgs.gov/publication/70016233},
  note = {Source identifier: 70016233}
}