@misc{indiciaec76b40c78c2c,
  title = {Deep-ocean ferromanganese crusts and nodules},
  author = {James R. Hein and Andrea Koschinsky},
  year = {2014},
  doi = {10.1016/b978-0-08-095975-7.01111-6},
  url = {https://pubs.usgs.gov/publication/70046853},
  note = {Source identifier: 70046853}
}