@misc{indiciaefba63f37ee31,
  title = {A knotty problem.},
  author = {J U Wilson},
  year = {1993},
  doi = {10.1111/j.1365-2044.1993.tb07574.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/8285359/},
  note = {Source identifier: 8285359}
}