@misc{indiciae1b891af7a4c8,
  title = {VISUAL DISPLAYS FOR SPACE SYSTEMS.},
  author = {M L RITCHIE},
  year = {1963},
  doi = {10.1177/001872086300500311},
  url = {https://pubmed.ncbi.nlm.nih.gov/14061928/},
  note = {Source identifier: 14061928}
}