@misc{indiciae5a007647ffac,
  title = {Spasm of fixation: a quantitative study.},
  author = {J L Johnston and J A Sharpe and M J Morrow},
  year = {1992},
  doi = {10.1016/0022-510x(92)90285-s},
  url = {https://pubmed.ncbi.nlm.nih.gov/1564515/},
  note = {Source identifier: 1564515}
}