@misc{indiciae9803711f9445,
  title = {A simple low cost footswitch.},
  author = {A B Liggins and P Bowker},
  year = {1991},
  doi = {10.1016/0141-5425(91)90051-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/2002680/},
  note = {Source identifier: 2002680}
}