@misc{indiciaec407af88792f,
  title = {Geochemistry of coastal tarballs in southern California—A tribute to I. R. Kaplan},
  author = {Keith A. Kvenvolden and Frances D. Hostettler},
  year = {2004},
  doi = {10.1016/s1873-9881(04)80016-6},
  url = {https://pubs.usgs.gov/publication/70208241},
  note = {Source identifier: 70208241}
}