@misc{indiciaeca4711e4baec,
  title = {Ubiquitous tar balls with a California-source signature on the shorelines of Prince William Sound, Alaska},
  author = {Keith A. Kvenvolden and Frances D. Hostettler and P.R. Carlson and John B. Rapp and C. N. Threlkeld and Augusta Warden},
  year = {2002},
  doi = {10.1021/es00010a033},
  url = {https://pubs.usgs.gov/publication/70208290},
  note = {Source identifier: 70208290}
}