TY  - RPRT
TI  - A simple low cost footswitch.
AU  - A B Liggins
AU  - P Bowker
PY  - 1991
DO  - 10.1016/0141-5425(91)90051-8
UR  - https://pubmed.ncbi.nlm.nih.gov/2002680/
ID  - 2002680
ER  -