@misc{indiciae6a13a8fa9fb2,
  title = {Laser Doppler system for measuring three dimensional vector velocity Patent},
  author = {Huffaker, R. M. and Kinnard, K. F. and Rolf, E.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710009737},
  note = {Source identifier: 19710009737}
}