@misc{indiciaefac3d4503fdd,
  title = {Early precision compound machine from ancient China.},
  author = {Peter J Lu},
  year = {2004},
  doi = {10.1126/science.1096588},
  url = {https://pubmed.ncbi.nlm.nih.gov/15192220/},
  note = {Source identifier: 15192220}
}