@misc{indiciaee8036bb45892,
  title = {Head orientation measured with a video system.},
  author = {J E Bechtold and P Ridl and R P Hubbard and J Vorro},
  year = {1983},
  doi = {10.1115/1.3138441},
  url = {https://pubmed.ncbi.nlm.nih.gov/6645453/},
  note = {Source identifier: 6645453}
}