@misc{indiciae862e75293d25,
  title = {Etching times.},
  author = {N S Hiltunen},
  year = {1990},
  doi = {10.14219/jada.archive.1990.0258},
  url = {https://pubmed.ncbi.nlm.nih.gov/2205640/},
  note = {Source identifier: 2205640}
}