@misc{indiciaeb3a42b072c0f,
  title = {Flexible wings for transportation.},
  author = {Rogallo, F. M. and Croom, D. R. and Sleeman, W. C., Jr.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720049516},
  note = {Source identifier: 19720049516}
}