@misc{indiciae840aea78df13,
  title = {Apparatus for randomly determining visual stimulus positions using a 'forced-choice' psychophysical procedure.},
  author = {J D Wicke and D B Lindsley},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5350009/},
  note = {Source identifier: 5350009}
}