@misc{indiciaebf485976bde1,
  title = {Development and modification of a digital program for final approach to landing},
  author = {Duff, W. G. and Guarino, C. R.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750006704},
  note = {Source identifier: 19750006704}
}