@misc{indiciae0c38cd8b7829,
  title = {Cobalt mineral exploration and supply from 1995 through 2013},
  author = {David R. Wilburn},
  year = {2011},
  doi = {10.3133/sir20115084},
  url = {https://pubs.usgs.gov/publication/sir20115084},
  note = {Source identifier: sir20115084}
}