@misc{indiciaeacdfcf46b921,
  title = {A low--pollution engine solution.},
  author = {S Ashley},
  year = {2001},
  doi = {10.1038/scientificamerican0601-90},
  url = {https://pubmed.ncbi.nlm.nih.gov/11396347/},
  note = {Source identifier: 11396347}
}