@misc{indiciaed43bc82ea095,
  title = {Oxidation state of marine manganese nodules},
  author = {D.Z. Piper and J.R. Basler and J. L. Bischoff},
  year = {1984},
  doi = {10.1016/0016-7037(84)90230-8},
  url = {https://pubs.usgs.gov/publication/70013959},
  note = {Source identifier: 70013959}
}