@misc{indiciaeae0aaf19975f,
  title = {Colour for time; charting the fourth dimension.},
  author = {J L Jay},
  year = {1997},
  doi = {10.1136/bjo.81.12.1026},
  url = {https://pubmed.ncbi.nlm.nih.gov/9497456/},
  note = {Source identifier: 9497456}
}