@misc{indiciaeefcbf49ee6d5,
  title = {Comparing three head-pointing systems using a single subject design.},
  author = {J Angelo and C Deterding and J Weisman},
  year = {1991},
  doi = {10.1080/10400435.1991.10132181},
  url = {https://pubmed.ncbi.nlm.nih.gov/10147558/},
  note = {Source identifier: 10147558}
}