@misc{indiciae92a82bb240a9,
  title = {Natural seepage of crude oil into the marine environment},
  author = {K.A. Kvenvolden and C.K. Cooper},
  year = {2003},
  doi = {10.1007/s00367-003-0135-0},
  url = {https://pubs.usgs.gov/publication/70025353},
  note = {Source identifier: 70025353}
}