@misc{indiciae8b6dd54c9c13,
  title = {Origins of organic geochemistry},
  author = {K.A. Kvenvolden},
  year = {2008},
  doi = {10.1016/j.orggeochem.2008.02.017},
  url = {https://pubs.usgs.gov/publication/70000336},
  note = {Source identifier: 70000336}
}