@misc{indiciae150c0555bdeb,
  title = {Soft signs.},
  author = {T T Ingram},
  year = {1973},
  doi = {10.1111/j.1469-8749.1973.tb05079.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4732905/},
  note = {Source identifier: 4732905}
}