@misc{indiciae636d0f2f27af,
  title = {Shadow rule for sun protection.},
  author = {L Holloway},
  year = {1994},
  doi = {10.1016/s0190-9622(09)80023-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/8077491/},
  note = {Source identifier: 8077491}
}