@misc{indiciae5d70c970caeb,
  title = {Virtual space and 2-dimensional effects in perspective displays},
  author = {Mcgreevy, M. W. and Ratzlaff, C. R. and Ellis, S. R.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860023533},
  note = {Source identifier: 19860023533}
}