@misc{indiciaebcac7efbf3f7,
  title = {Control for flexible parawing Patent},
  author = {Rogallo, F. M. and Sleeman, W. C., Jr.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19710001563},
  note = {Source identifier: 19710001563}
}