@misc{indiciae183ff912b16c,
  title = {Defining the indefinable: comments on Smith.},
  author = {Heather Ashton},
  year = {2002},
  doi = {10.1046/j.1360-0443.2002.t01-2-00060.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/12084147/},
  note = {Source identifier: 12084147}
}