@misc{indiciae647446319666,
  title = {Trace element emissions from spontaneous combustion of gob piles in coal mines, Shanxi, China},
  author = {Y. Zhao and Jiahua Zhang and C. L. Chou and Y. Li and Z. Wang and Y. Ge and C. Zheng},
  year = {2008},
  doi = {10.1016/j.coal.2007.07.007},
  url = {https://pubs.usgs.gov/publication/70033713},
  note = {Source identifier: 70033713}
}