@misc{indiciae4d597e7d48e0,
  title = {Development of an optimal automatic control law and filter algorithm for steep glideslope capture and glideslope tracking},
  author = {Halyo, N.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760022072},
  note = {Source identifier: 19760022072}
}