@misc{indiciae54cce61703ef,
  title = {Toxic heavy metals: materials cycle optimization.},
  author = {R U Ayres},
  year = {1992},
  doi = {10.1073/pnas.89.3.815},
  url = {https://pubmed.ncbi.nlm.nih.gov/11607259/},
  note = {Source identifier: 11607259}
}