@misc{indiciae8482245eb369,
  title = {Factors that influence the extraction of polycyclic aromatic hydrocarbons from coal},
  author = {J. Xue and Gaisheng Liu and Z. Niu and C. L. Chou and C. Qi and Lingyun Zheng and H. Zhang},
  year = {2007},
  doi = {10.1021/ef0605753},
  url = {https://pubs.usgs.gov/publication/70032084},
  note = {Source identifier: 70032084}
}