@misc{indiciaec6a09c28aa5e,
  title = {Classification of sunscreen preparations.},
  author = {D F Robertson and G A Groves},
  year = {1977},
  doi = {10.1111/j.1440-0960.1977.tb00021.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/614031/},
  note = {Source identifier: 614031}
}