@misc{indiciae73fe93f7fe73,
  title = {CLUSTER SETS AT ISOLATED AND NONISOLATED SINGULARITIES.},
  author = {H T Mathews},
  year = {1965},
  doi = {10.1073/pnas.53.6.1264},
  url = {https://pubmed.ncbi.nlm.nih.gov/16578600/},
  note = {Source identifier: 16578600}
}