@misc{indiciae8ae8e0110093, title = {Experience with the force-demand valve in controlling a pneumatically powered prosthesis.}, author = {G Kenworthy and D C Jolly}, year = {1973}, doi = {10.1007/bf02477304}, url = {https://pubmed.ncbi.nlm.nih.gov/4690341/}, note = {Source identifier: 4690341} }