@misc{indiciae6b3a17f2d03d,
  title = {Modification of elastic properties in structural analysis by force method.},
  author = {Hall, D. B. and Kaufman, S. and Swanson, C. J.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680048973},
  note = {Source identifier: 19680048973}
}