@misc{indiciaec61c54bebffb,
  title = {Simplified method to substantiate SPF labeling for sunscreen products.},
  author = {Robert M Sayre and Joseph Stanfield and Dennis L Lott and John C Dowdy},
  year = {2003},
  doi = {10.1034/j.1600-0781.2003.00050.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/14535896/},
  note = {Source identifier: 14535896}
}