@misc{indiciaefe6c74ece824,
  title = {Liquid-fuel valve with precise throttling control},
  author = {Mcdougal, A. R. and Porter, R. N. and Riebling, R. W.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710000446},
  note = {Source identifier: 19710000446}
}