@misc{indiciaeb365ea59bd00,
  title = {The studying of washing of arsenic and sulfur from coals having different ranges of arsenic contents},
  author = {M. Wang and D. Song and B. Zheng and R. B. Finkelman},
  year = {2008},
  doi = {10.1196/annals.1454.018},
  url = {https://pubs.usgs.gov/publication/70033735},
  note = {Source identifier: 70033735}
}