@misc{indiciae638701671cd1,
  title = {Worldwide differential GPS for Space Shuttle landing operations},
  author = {Loomis, Peter V. W. and Denaro, Robert P. and Saunders, Penny},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910049039},
  note = {Source identifier: 19910049039}
}