@misc{indiciae13657570b555,
  title = {Studies of multi-variable manual control systems - Two axis compensatory systems with compatible integrated display and control},
  author = {Elkind, J. I. and Levison, W. H.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660027852},
  note = {Source identifier: 19660027852}
}