@misc{indiciae8672c8b6dcca,
  title = {Ship motion pattern directed VTOL letdown guidance},
  author = {Phatak, A. V. and Karmali, M. S. and Paulk, C. H., Jr.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19840042666},
  note = {Source identifier: 19840042666}
}