@misc{indiciaee78c5b5bc9c7,
  title = {Refining green gold.},
  author = {David Labrador},
  year = {2003},
  doi = {10.1038/scientificamerican1203-38},
  url = {https://pubmed.ncbi.nlm.nih.gov/14631728/},
  note = {Source identifier: 14631728}
}