@misc{indiciae9a9839e57e93,
  title = {Nail pigmentation resulting from selenium sulfide and copper.},
  author = {R Wolf and C Perluk and A Krakowski},
  year = {1989},
  doi = {10.1111/j.1365-4362.1989.tb04620.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2583901/},
  note = {Source identifier: 2583901}
}