@misc{indiciae81c3637c4563,
  title = {Collaborative Studies for Mercury Characterization in Coal and Coal Combustion Products, Republic of South Africa},
  author = {Allan Kolker and Constance L. Senior and Chris van Alphen},
  year = {2014},
  doi = {10.3133/ofr20141153},
  url = {https://pubs.usgs.gov/publication/ofr20141153},
  note = {Source identifier: ofr20141153}
}