@misc{indiciaecb079aec052e,
  title = {Distribution of potentially hazardous trace elements in coals from Shanxi province, China},
  author = {J.Y. Zhang and C.G. Zheng and D.Y. Ren and C. L. Chou and J. Liu and R.-S. Zeng and Z.P. Wang and F.H. Zhao and Y.T. Ge},
  year = {2004},
  doi = {10.1016/s0016-2361(03)00221-7},
  url = {https://pubs.usgs.gov/publication/70027162},
  note = {Source identifier: 70027162}
}