@misc{indiciaee1b56b2cd88f,
  title = {Prosthetic urinary sphincters},
  author = {Helms, C. R. and Smyly, H. M.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770000290},
  note = {Source identifier: 19770000290}
}