@misc{indiciae566196186651,
  title = {Chemical analysis and modes of occurrence of selected trace elements in a coal sample from eastern Kentucky coal bed: White Creek Mine, Martin County, Kentucky},
  author = {Curtis A. Palmer and Kris Dennen and Allan Kolker and Robert F. Finkelman and John H. Bullock},
  year = {2002},
  doi = {10.3133/ofr02311},
  url = {https://pubs.usgs.gov/publication/ofr02311},
  note = {Source identifier: ofr02311}
}