@misc{indiciae0c60639dbffd,
  title = {SPAR structural analysis system reference manual, system level 13A. Volume 4: Program reference},
  author = {Jones, C. E. and Whetstone, W. D.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19790074432},
  note = {Source identifier: 19790074432}
}