@misc{indiciaed9def13995db,
  title = {A unique Middle Ordovician K-bentonite bed succession at Röstånga, S. Sweden},
  author = {Stig M. Bergstrom and Warren D. Huff and Dennis R. Kolata and Deborah A. Yost and Charles P. Hart},
  year = {1997},
  doi = {10.1080/11035899709546481},
  url = {https://pubs.usgs.gov/publication/70019656},
  note = {Source identifier: 70019656}
}