@misc{indiciae28827d10e05b,
  title = {Computer program performs stiffness matrix structural analysis},
  author = {Bamford, R. and Batchelder, R. and Schmele, L. and Wada, B. K.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680000096},
  note = {Source identifier: 19680000096}
}