@misc{indiciae1488037c5554,
  title = {Walking boot assembly},
  author = {Vykukal, H. C. and Chambers, A. B. and Stjohn, R. H.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780009732},
  note = {Source identifier: 19780009732}
}