@misc{indiciae07c7295cdd7f,
  title = {Design of the software development and verification system (SWDVS) for shuttle NASA study task 35},
  author = {Drane, L. W. and Mccoy, B. J. and Silver, L. W.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19750003966},
  note = {Source identifier: 19750003966}
}