@misc{indiciae20b833c6ae56,
  title = {Circular involute stage.},
  author = {Jingzhou Xu and X C Zhang},
  year = {2004},
  doi = {10.1364/ol.29.002082},
  url = {https://pubmed.ncbi.nlm.nih.gov/15455787/},
  note = {Source identifier: 15455787}
}