@misc{indiciaeefdea3780ffc,
  title = {The ecohealth assessment and ecological restoration division of urban water system in Beijing},
  author = {J. Liu and M. Ma and F. Zhang and Z. Yang and Joseph L. Domagalski},
  year = {2009},
  doi = {10.1007/s10646-009-0342-1},
  url = {https://pubs.usgs.gov/publication/70036618},
  note = {Source identifier: 70036618}
}