@misc{indiciae10eb15025263,
  title = {Another problem with a circle system.},
  author = {T Walker},
  year = {1996},
  doi = {10.1111/j.1365-2044.1996.tb07665.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/8669578/},
  note = {Source identifier: 8669578}
}