@misc{indiciae85e69e9ad357,
  title = {Computerized polar plots by a cathode ray tube/grid overlay method},
  author = {Freeman, J. M. and Shoup, E. L.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700000299},
  note = {Source identifier: 19700000299}
}