@misc{indiciaed04be8323bbd,
  title = {Variations in acid-etch patterns with different acids and etch times.},
  author = {A Gardner and R Hobson},
  year = {2001},
  doi = {10.1067/mod.2001.114643},
  url = {https://pubmed.ncbi.nlm.nih.gov/11455380/},
  note = {Source identifier: 11455380}
}