@misc{indiciae8e76b9507651,
  title = {A computer program for the geometrically nonlinear static and dynamic analysis of arbitrarily loaded shells of revolution, theory and users manual},
  author = {Ball, R. E.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720015267},
  note = {Source identifier: 19720015267}
}