@misc{indiciae4bc63a9a8ca1,
  title = {Research study of the vortex valve for medium-temperature solid propellants},
  author = {Holt, W. D. and Rivard, J. G.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660012406},
  note = {Source identifier: 19660012406}
}